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      4000 系列单一尺寸微粒

      ThermoScientific™4000系列单一尺寸微粒可使分析系统对形状影响的反应最小化,非常适合于需要具有极窄标准偏差的NIST™溯源性尺寸标准品的领域。特点:使用微球代替不规则形状的微粒。已经利用ThermoFisherScientific™的NIST™可溯源的显微镜检查方法,对平均直径进行了校准。通过电阻分析或光学显微镜检查测量了粒径分布和

      1. 详细信息

      Thermo Scientific™ 4000 系列单一尺寸微粒可使分析系统对形状影响的反应最小化,非常适合于需要具有极窄标准偏差的 NIST™ 溯源性尺寸标准品的领域。

      特点:

      • 使用微球代替不规则形状的微粒。
      • 已经利用 Thermo Fisher Scientific™ 的 NIST™ 可溯源的显微镜检查方法,对平均直径进行了校准。
      • 通过电阻分析或光学显微镜检查测量了粒径分布和均匀性。
      • 1 至 160 μm 粒径的 4000 系列微粒由聚苯乙烯 (PS) 制造而成
      • 200 至 1000 μm 粒径的 4000 系列微粒由聚苯乙烯与二乙烯基苯 (PSDVB) 交联合成制造而成。

      订购信息:

      粒径 1 至 160 μm 的产品用 15mL 滴头式瓶装包装,为液体悬浮液,为适合分散、处理和稀释的最佳浓度。 直径为 200 μm 及以上的产品以干燥球体形式包装。 包装上有批号,以便于售后技术服务和支持。

      Thermo Fisher Scientific™ 拥有自己的设计、生产和测量设施,可实现更好的质量控制,并对客户需求做出反应。 除了这一系列聚合物尺寸标准品外,我们还提供二氧化硅和玻璃材料的校准标准品。 有关特殊应用或此处未列出的其他产品需求的信息,请询问我们的技术服务部门。

      含:

      NIST 校准和可溯源性证书,其中包括校准方法及其不确定性说明、化学和物理特性表、材料安全数据表

       

      Improved Array Method for Size Calibration of Monodisperse Spherical Particles by Optical Microscope

      Internal Standard Method for Size Calibration of Sub-Micrometer Spherical Particles

      NIST Traceable Particle Size Standards 3000 4000 8000 9000

      MSDS下载

       

      目录号
      直径(公制)
      4009A
      0.994μm ± 0.021μm
      添加剂 Contains trace amount of surfactant to inhibit agglomeration and promote stability
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 0.994μm ± 0.021μm
      直径(公制) 颗粒 0.994 ± 0.021μm
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 15毫升
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 0.010μm , 1.0 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
      物品描述 Dia.: 0.994um +/- 0.010um, sigma = 0.010um, 1.0% CV
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4010A
      1.019μm ± 0.015μm
      添加剂 Contains trace amount of surfactant to inhibit agglomeration and promote stability
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 1.019μm ± 0.015μm
      直径(公制) 颗粒 1.019 ± 0.015μm
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 15毫升
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 0.010μm , 1.0 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
      物品描述 Dia.: 1.019um +/- 0.015um, sigma = 0.010um, 1.0% CV
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4011A
      1.101μm ± 0.017μm
      添加剂 Contains trace amount of surfactant to inhibit agglomeration and promote stability
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 1.101μm ± 0.017μm
      直径(公制) 颗粒 1.101 ± 0.017μm
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 15毫升
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 0.012μm , 1.1 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
      物品描述 Dia.: 1.101um +/- 0.017um, sigma = 0.012um, 1.1% CV
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4013A
      1.361μm ± 0.015μm
      添加剂 Contains trace amount of surfactant to inhibit agglomeration and promote stability
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 1.361μm ± 0.015μm
      直径(公制) 颗粒 1.361 ± 0.015μm
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 15毫升
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 0.021μm , 1.5 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
      物品描述 Dia.: 1.361um +/- 0.015um, sigma = 0.021um, 1.5% CV
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4016A
      1.587μm ± 0.018μm
      添加剂 Contains trace amount of surfactant to inhibit agglomeration and promote stability
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 1.587μm ± 0.018μm
      直径(公制) 颗粒 1.587 ± 0.018μm
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 15毫升
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 0.021μm , 1.3 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
      物品描述 Dia.: 1.587um +/- 0.018um, sigma = 0.021um, 1.3% CV
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4018A
      1.745μm ± 0.022μm
      添加剂 Contains trace amount of surfactant to inhibit agglomeration and promote stability
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 1.745μm ± 0.022μm
      直径(公制) 颗粒 1.745 ± 0.022μm
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 15毫升
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 0.019μm , 1.1 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
      物品描述 Dia.: 1.745um +/- 0.022um, sigma = 0.019um, 1.1% CV
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4025A
      2.504μm ± 0.027μm
      添加剂 Contains trace amount of surfactant to inhibit agglomeration and promote stability
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 2.504μm ± 0.027μm
      直径(公制) 颗粒 2.504 ± 0.027μm
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 15毫升
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 0.025μm的, 1.0 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
      物品描述 Dia.: 2.504um +/- 0.027um, sigma = 0.025um, 1.0% CV
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4202A
      1.999μm ± 0.020μm
      添加剂 Contains trace amount of surfactant to inhibit agglomeration and promote stability
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 1.999μm ± 0.020μm
      直径(公制) 颗粒 1.999 ± ​​0.020μm
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 15毫升
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 0.022μm , 1.1 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
      物品描述 Dia.: 1.999um +/- 0.020um, sigma = 0.022um, 1.1% CV
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4203A
      3.002μm ± 0.019μm
      添加剂 Contains trace amount of surfactant to inhibit agglomeration and promote stability
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 3.002μm ± 0.019μm
      直径(公制) 颗粒 3.002 ± 0.019μm
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 15毫升
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 0.029μm , 1.1 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
      物品描述 Dia.: 3.002um +/- 0.019um, sigma = 0.029um, 1.1% CV
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4204A
      4.4.000μm ± 0.043μm
      添加剂 Contains trace amount of surfactant to inhibit agglomeration and promote stability
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 4.4.000μm ± 0.043μm
      直径(公制) 颗粒 4.000 ± 0.043μm
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 15毫升
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 0.04μm , 1.0 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
      物品描述 Dia.: 4.000um +/- 0.043um, sigma = 0.04um, 1.0% CV
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4205A
      4.993μm ± 0.040μm
      添加剂 Contains trace amount of surfactant to inhibit agglomeration and promote stability
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 4.993μm ± 0.040μm
      直径(公制) 颗粒 4.993 ± 0.040μm
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 15毫升
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 0.05微米, 1.0 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
      物品描述 Dia.: 4.993um +/- 0.040um, sigma = 0.05um, 1.0% CV
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4206A
      6.007μm ± 0.040μm
      添加剂 Contains trace amount of surfactant to inhibit agglomeration and promote stability
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 6.007μm ± 0.040μm
      直径(公制) 颗粒 6.007 ± 0.040μm
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 15毫升
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 0.06μm的, 1.0 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
      物品描述 Dia.: 6.007um +/- 0.040um, sigma = 0.06um, 1.0% CV
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4207A
      6.982μm ± 0.045μm
      添加剂 Contains trace amount of surfactant to inhibit agglomeration and promote stability
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 6.982μm ± 0.045μm
      直径(公制) 颗粒 6.982 ± 0.045μm
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 15毫升
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 0.07微米, 1.0 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
      物品描述 Dia.: 6.982um +/- 0.045um, sigma = 0.07um, 1.0% CV
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4208A
      7.979μm ± 0.075μm
      添加剂 Contains trace amount of surfactant to inhibit agglomeration and promote stability
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 7.979μm ± 0.075μm
      直径(公制) 颗粒 7.979 ± 0.075μm
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 15毫升
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 0.09微米, 1.1 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
      物品描述 Dia.: 7.979um +/- 0.075um, sigma = 0.09um, 1.1% CV
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4209A
      8.956μm ± 0.082μm
      添加剂 Contains trace amount of surfactant to inhibit agglomeration and promote stability
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 8.956μm ± 0.082μm
      直径(公制) 颗粒 8.956 ± 0.082μm
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 15毫升
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 0.09微米, 1.0 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
      物品描述 Dia.: 8.956um +/- 0.082um, sigma = 0.09um, 1.0% CV
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4210A
      10.00μm ± 0.08μm
      添加剂 Contains trace amount of surfactant to inhibit agglomeration and promote stability
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 10.00μm ± 0.08μm
      直径(公制) 颗粒 10.00 ± 0.08μm
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 15毫升
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 0.09微米, 0.9 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
      物品描述 Dia.: 10.00um +/- 0.08um, sigma = 0.09um, 0.9% CV
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4212A
      12.01μm ± 0.11微米
      添加剂 Contains trace amount of surfactant to inhibit agglomeration and promote stability
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 12.01μm ± 0.11微米
      直径(公制) 颗粒 12.01 ± 0.11微米
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 15毫升
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 0.12微米, 1.0 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
      物品描述 Dia.: 12.01um +/- 0.11um, sigma = 0.12um, 1.0% CV
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4215A
      14.97μm ± 0.1微米
      添加剂 Contains trace amount of surfactant to inhibit agglomeration and promote stability
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 14.97μm ± 0.1微米
      直径(公制) 颗粒 14.97 ± 0.1微米
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 15毫升
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 0.13微米, 0.9 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
      物品描述 Dia.: 14.97um +/- 0.10um, sigma = 0.13um, 0.9% CV
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4220A
      19.99μm ± 0.25微米
      添加剂 Contains trace amount of surfactant to inhibit agglomeration and promote stability
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 19.99μm ± 0.25微米
      直径(公制) 颗粒 19.99 ± 0.25微米
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 15毫升
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 0.28μm , 1.4 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
      物品描述 Dia.: 19.99um +/- 0.25um, sigma = 0.28um, 1.4% CV
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4225A
      24.61μm ± 0.22μm的
      添加剂 Contains trace amount of surfactant to inhibit agglomeration and promote stability
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 24.61μm ± 0.22μm的
      直径(公制) 颗粒 24.61 ± 0.22μm的
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 15毫升
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 0.27μm , 1.1 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
      物品描述 Dia.: 24.61um +/- 0.22um, sigma = 0.27um, 1.1% CV
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4230A
      29.75μm ± 0.56μM
      添加剂 Contains trace amount of surfactant to inhibit agglomeration and promote stability
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 29.75μm ± 0.56μM
      直径(公制) 颗粒 29.75 ± 0.56μM
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 15毫升
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 0.42μm , 1.4 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
      物品描述 Dia.: 29.75um +/- 0.56um, sigma = 0.42um, 1.4% CV
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4240A
      39.94μm ± 0.35μm的
      添加剂 Contains trace amount of surfactant to inhibit agglomeration and promote stability
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 39.94μm ± 0.35μm的
      直径(公制) 颗粒 39.94 ± 0.35微米
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 15毫升
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 0.52μm , 1.3 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
      物品描述 Dia.: 39.94um +/- 0.35um, sigma = 0.52um, 1.3% CV
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4250A
      50.2μm ± 0.3μm的
      添加剂 Contains trace amount of surfactant to inhibit agglomeration and promote stability
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 50.2μm ± 0.3μm的
      直径(公制) 颗粒 50.2 ± 0.3微米
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 15毫升
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 0.5微米, 1.0 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
      物品描述 直径: 50.2um + /​​ - 0.3微米,标准差= 0.5微米, 1.0 %的CV(Coefficient Of Variation)
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4260A
      59.2μm ± 0.6μm的
      添加剂 Contains trace amount of surfactant to inhibit agglomeration and promote stability
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 59.2μm ± 0.6μm的
      直径(公制) 颗粒 59.2 ± 0.6微米
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 15毫升
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 0.8微米, 1.4 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
      物品描述 直径: 59.2um + /​​ - 0.6um ,标准差= 0.8um , 1.4 %的CV(Coefficient Of Variation)
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4270A
      69.1μm ± 0.9μm
      添加剂 Contains trace amount of surfactant to inhibit agglomeration and promote stability
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 69.1μm ± 0.9μm
      直径(公制) 颗粒 69.1 ± 0.9μm
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 15毫升
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 0.8微米, 1.2 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
      物品描述 直径: 69.1um + /​​ - 0.9um ,标准差= 0.8um , 1.2 %的CV(Coefficient Of Variation)
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4280A
      79.4μm ± 0.5μm的
      添加剂 Contains trace amount of surfactant to inhibit agglomeration and promote stability
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 79.4μm ± 0.5μm的
      直径(公制) 颗粒 79.4 ± 0.5微米
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 15毫升
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 1.0微米, 1.3 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
      物品描述 直径: 79.0um + /​​ - 1.3um ,标准差= 1.0um , 1.3 %的CV(Coefficient Of Variation)
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4310A
      为100μm ± 1.5μm的
      添加剂 Contains trace amount of surfactant to inhibit agglomeration and promote stability
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 为100μm ± 1.5μm的
      直径(公制) 颗粒 100 ± 1.5μm的
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 15毫升
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 1.6微米, 1.6 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
      物品描述 直径: 100um的+ / - 1.5um左右,标准差= 1.6um , 1.6 %的CV(Coefficient Of Variation)
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4311A
      113μm ± 1.0μm的
      添加剂 Contains trace amount of surfactant to inhibit agglomeration and promote stability
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 113μm ± 1.0μm的
      直径(公制) 颗粒 113 ± 1.0微米
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 15毫升
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 1.6微米, 1.4 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
      物品描述 直径: 113um + /​​ - 1.0um ,标准差= 1.6um , 1.4 %的CV(Coefficient Of Variation)
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4314A
      138μm ± 2.0微米
      添加剂 Contains trace amount of surfactant to inhibit agglomeration and promote stability
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 138μm ± 2.0微米
      直径(公制) 颗粒 138 ± 2.0微米
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 15毫升
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 2.2微米, 1.6 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
      物品描述 直径: 138um + /​​ - 2.0um ,标准差= 2.2um , 1.6 %的CV(Coefficient Of Variation)
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4316A
      161μm ± 3.1μm
      添加剂 Contains trace amount of surfactant to inhibit agglomeration and promote stability
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 161μm ± 3.1μm
      直径(公制) 颗粒 161 ± 3.1μm
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 15毫升
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 2.9μm , 1.8 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Unless otherwise stated, refrigerate (2° to 8°C) product when not in use but do not freeze. Store upright and keep bottle tightly sealed. Mix product with gentle inversion by hand or vortex mixer.
      物品描述 直径: 160um + /​​ - 3.1um ,标准差= 2.9um , 1.8 %的CV(Coefficient Of Variation)
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4320A
      197μm ± 3.2μm
      添加剂 May contain trace amount of dispersant
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 197μm ± 3.2μm
      直径(公制) 颗粒 197 ± 3.2μm
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 1g
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 5.7μm , 2.9 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Store at room temperature in a dry area. Store upright and keep bottle tightly sealed. Respiratory protection from dust is recommended.
      物品描述 直径: 197um + /​​ - 3.2um ,标准差= 5.7um , 2.9 %的CV(Coefficient Of Variation)
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4324A
      235μm ± 3.7μm
      添加剂 May contain trace amount of dispersant
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 235μm ± 3.7μm
      直径(公制) 颗粒 235 ± 3.7μm
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 1g
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 7.3μm , 3.1 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Store at room temperature in a dry area. Store upright and keep bottle tightly sealed. Respiratory protection from dust is recommended.
      物品描述 直径: 235um + /​​ - 3.7um ,标准差= 7.3um , 3.1 %的CV(Coefficient Of Variation)
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4328A
      279μm ± 4.9μm
      添加剂 May contain trace amount of dispersant
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 279μm ± 4.9μm
      直径(公制) 颗粒 279 ± 4.9μm
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 1g
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 13.5μm , 4.8 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Store at room temperature in a dry area. Store upright and keep bottle tightly sealed. Respiratory protection from dust is recommended.
      物品描述 直径: 279um + /​​ - 4.9um ,标准差= 13.5um , 4.8 %的CV(Coefficient Of Variation)
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4330A
      289μm ± 6.2μm
      添加剂 May contain trace amount of dispersant
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 289μm ± 6.2μm
      直径(公制) 颗粒 289 ± 6.2μm
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 1g
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 9.7μm , 3.4 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Store at room temperature in a dry area. Store upright and keep bottle tightly sealed. Respiratory protection from dust is recommended.
      物品描述 直径: 289um + /​​ - 6.2um ,标准差= 9.7um , 3.4 %的CV(Coefficient Of Variation)
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4340A
      399μm ± 8.5μm
      添加剂 May contain trace amount of dispersant
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 399μm ± 8.5μm
      直径(公制) 颗粒 399 ± 8.5μm
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 1g
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 12.2μm , 3.1 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Store at room temperature in a dry area. Store upright and keep bottle tightly sealed. Respiratory protection from dust is recommended.
      物品描述 直径: 399um + /​​ - 8.5um ,标准差= 12.2um , 3.1 %的CV(Coefficient Of Variation)
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4350A
      为500μm ± 10μm的
      添加剂 May contain trace amount of dispersant
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 为500μm ± 10μm的
      直径(公制) 颗粒 500 ± 10μm的
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 1g
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 25.1μm , 5.0 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Store at room temperature in a dry area. Store upright and keep bottle tightly sealed. Respiratory protection from dust is recommended.
      物品描述 直径: 500um + /​​ - 10um的,σ= 25.1um , 5.0 %的CV(Coefficient Of Variation)
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4355A
      552μm ±为11μm
      添加剂 May contain trace amount of dispersant
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 552μm ±为11μm
      直径(公制) 颗粒 552 ±为11μm
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 1g
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 27.0μm , 4.9 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Store at room temperature in a dry area. Store upright and keep bottle tightly sealed. Respiratory protection from dust is recommended.
      物品描述 直径: 552um + /​​ - 11um ,σ= 27.0um , 4.9 %的CV(Coefficient Of Variation)
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4365A
      644μm ±为11μm
      添加剂 May contain trace amount of dispersant
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 644μm ±为11μm
      直径(公制) 颗粒 644 ±为11μm
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 1g
      折射率 1.59在589nm ( 25 ℃)
      规格分布 S = 24.8μm , 3.9 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Store at room temperature in a dry area. Store upright and keep bottle tightly sealed. Respiratory protection from dust is recommended.
      物品描述 直径: 644um + /​​ - 11um ,σ= 24.8um , 3.9 %的CV(Coefficient Of Variation)
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4375A
      773μm ± 13μm的
      添加剂 May contain trace amount of dispersant
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 773μm ± 13μm的
      直径(公制) 颗粒 773 ± 13μm的
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 1g
      折射率 1.49在589nm ( 25 ℃)
      规格分布 S = 33.3μm , 4.3 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Store at room temperature in a dry area. Store upright and keep bottle tightly sealed. Respiratory protection from dust is recommended.
      物品描述 直径: 773um + /​​ - 13um ,σ= 33.3um , 4.3 %的CV(Coefficient Of Variation)
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.
      4400A
      1007μm ± 13μm的
      添加剂 May contain trace amount of dispersant
      组成 聚苯乙烯
      浓度 1.00 %的固体
      目录 Polymer particles in water
      描述 NIST traceable particles that provide calibration of laser particle counters
      直径(公制) 1007μm ± 13μm的
      直径(公制) 颗粒 1007 ± 13μm的
      包括 Certificate of Calibration and Traceability to NIST
      材料 聚苯乙烯
      粒子密度 1.05g/cm ³
      数量 1g
      折射率 1.49在589nm ( 25 ℃)
      规格分布 S = 48.3μm , 4.8 %的CV(Coefficient Of Variation)
      稳定性 产品稳定最少24个月
      储存要求 Store at room temperature in a dry area. Store upright and keep bottle tightly sealed. Respiratory protection from dust is recommended.
      物品描述 直径: 1007um + /​​ - 13um ,σ= 48.3um , 4.8 %的CV(Coefficient Of Variation)
      认证/合规 Each package of standards contains a Certificate of Calibration and Traceability to NIST which includes a description of the calibration method and its uncertainty, and a table of chemical and physical properties.