标准品
Meeting regulations in any industry, standards are essential for periodically checking the accuracy of equipment pieces. By comparing against the known values, output readings detect errors present and inform personnel adjustments are required. Once the settings of the manual or automatic instruments have returned to zero, the reestablished conditions will yield optimal working performance. Calibrating with concentrated standards eliminates the possibility that environmental changes will induce instrumental miscalculation when accuracy matters most.
VWR®, Scandium standard solution, 1000 mg/L Sc in dil. nitric acid (from Sc2O3) ARISTAR® standard for ICP
Supplier: VWR Chemicals
Sc₂O₃ in HNO₃ 2 to 5%.
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VWR®, Sulphur, Certified Reference Materials, in heavy mineral oil
Supplier: VWR Chemicals
Sulphur CRMs are suitable for calibration, verification or for use in quality control procedures used for analysing sulphur content in petroleum products.
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VWR®, Density standards referenced at 60 °C
Supplier: VWR Chemicals
These products can be used as calibration standards for density measurements by pycnometric, vibrational or hydrometer-based techniques.
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VWR® ARISTAR®, Samarium Standard Solutions for ICP-MS
Supplier: VWR Chemicals
Samarium Standard, 10 ppm, VWR® ARISTAR®, 钐, 基质: 2% HNO₃, 应用: ICP-MS standards
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VWR®, Residual Solvents Class 1 According to Ph. Eur. Versions 8.8 and 10
Supplier: VWR Chemicals
The level of volatile organic solvents in pharmaceutical raw materials or finished product is defined and monitored. Residual solvents are classified according to their risk assessment classes. A selection of residual solvent standards is now available from Avantor.
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VWR®, Conductivity standard solutions
Supplier: VWR Chemicals
A complete range of certified control standards with values ranging from 1,3 to 500000 µs to meet all the requirements for electrochemical analysis.
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ARISTAR®, Bismuth Standard Solutions for ICP-MS
Supplier: VWR Chemicals
Bismuth Standard, 10 ppm, VWR® ARISTAR®, 铋, 基质: 2-5% HNO₃, 应用: ICP-MS standards
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VWR® ARISTAR® Anion Multi-Component Standard 2 for Ion Chromatography, Avantor
Supplier: VWR Chemicals
Anion multi-component standard 2 for IC, VWR®, 应用: Ion chromatography standards
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VWR® ARISTAR®, Calcium Standard Solutions for ICP-MS
Supplier: VWR Chemicals
Calcium Standard, 10000 mg/L, VWR® ARISTAR®, 钙, 基质: 2-5% HNO₃, 应用: ICP-MS standards
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VWR® ARISTAR®, Praseodymium Standard Solutions for ICP-MS
Supplier: VWR Chemicals
Praseodymium Standard, 1000 ppm, VWR® ARISTAR®, 镨, 基质: 2-5% HNO₃, 应用: ICP-MS standards
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VWR® ARISTAR®, Strontium Standard Solution, 1000 mg/L Sr in dil. Nitric Acid (from Sr(NO₃)₂), Standard for ICP
Supplier: VWR Chemicals
Sr(NO₃)₂ in HNO₃ 2 to 5%.
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VWR®, Silicate 1,000 mg/L in 1% sodium hydroxide solution, standard for ion chromatography
Supplier: VWR Chemicals
Silicate standard solution, 1000 mg/l, VWR®, 基质: NaOH 1%, 应用: Ion chromatography standards
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VWR® ARISTAR®, Phosphorus Standard Solutions for ICP-MS
Supplier: VWR Chemicals
Phosphorus Standard, 1000 ppm, VWR® ARISTAR®, 磷, 基质: H₂O, 应用: ICP-MS standards
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VWR®, Diazinon 100 µg/ml in methanol, pesticide reference standard
Supplier: VWR Chemicals
Organic Standard, Diazinon 100 µg/ml in methanol, 包装类型: Glass ampoule
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VWR®, Density Standards for the Petroleum Industry, Certified Reference Materials
Supplier: VWR Chemicals
Density Certified Reference Materials are for the verification of laboratory instruments used in testing petroleum and derivative products for density in accordance with methodology, but not limited to, such as ASTM D4052, IP 365 and other equivalent international methodology.
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ARISTAR®, Europium Standard Solutions for ICP-MS
Supplier: VWR Chemicals
Europium Standard, 10 mg/L, VWR® ARISTAR®, 铕, 基质: 2-5% HNO₃, 应用: ICP-MS standards