standards

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.

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VWR® ARISTAR®, Multi-Element Quality Control Standard 10 mg/L, 12 Elements in Nitric Acid 2% / Hydrofluoric Acid < 0.1% for ICP-MS

Supplier: VWR Chemicals

12 elements at 10 mg/L: Hf, Ge, Mo, Nb, Sb, Si, Sn, Ta, Te, Ti, W, Zr

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VWR®, UV/Visible spectroscopy stray light standards

Supplier: VWR Chemicals

Stray light standards packed in permanently sealed UV cuvettes or 100 ml amber bottle.

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PAH Mix 1, EPA 610

Supplier: VWR Chemicals

Multi-component standard with 0,1 mg/ml of each component in methanol.

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VWR®, Colour standard solutions, Reag. Ph. Eur.

Supplier: VWR Chemicals

Ready to use colour solutions according to Reag. Ph. Eur.

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VWR®, Mixed Anions Standard, 7 components in H₂O

Supplier: VWR Chemicals

7 components: Fluorides (F-) 2ppm, Phosphates (PO43-) 10ppm, Nitrites (NO2-) 5ppm, Nitrates (NO3-) 10ppm, Bromides (Br-) 10ppm, Chlorides (Cl-) 5ppm, Sulphates (SO42-) 10ppm in H₂O

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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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VWR®, UV/Visible spectroscopy wavelength standards

Supplier: VWR Chemicals

Wavelength standards (certified at 0,1; 0,2; 0,5; 1 and 2 nm slit widths) packed in six permanently sealed UV cuvettes or 100 ml amber bottles.

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VWR®, UV/Visible spectroscopy linearity standards at 235, 257, 313 and 350 nm

Supplier: VWR Chemicals

Linearity standards packed in permanently sealed UV cuvettes or 100 ml amber bottles.

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VWR®, Pesticide reference standard, Performance Check Solution pesticides and PCBs, EPA 608

Supplier: VWR Chemicals

17 components.

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VWR®, Propyzamide neat Certified Reference Material

Supplier: VWR Chemicals

Organic Standard, Propyzamide neat Certified Reference Material, Pack type: Glass ampoule

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VWR®, α-Endosulfan Certified Reference Material

Supplier: VWR Chemicals

Organic Standard, α-Endosulfan Certified Reference Material, Pack type: Glass ampoule

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VWR®, Endosulfan mixed isomers neat Certified Reference Material

Supplier: VWR Chemicals

Organic Standard, Endosulfan, mixed isomers neat CRM, Pack type: Glass ampoule

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VWR® ARISTAR®, Ion chromatography anion multi-element standard solution, Certified Reference Material

Supplier: VWR Chemicals

This certified reference material is produced using a high purity starting material, acid from sub-boiling and 18 MOhm deionized water and filtered through a 0.2 micron filter.

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VWR®, Pour Point standards

Supplier: VWR Chemicals

Pour Point Certified Reference Materials for the verification of laboratory instruments used in testing petroleum and derivative products for Pour Point to ASTM D97, IP 15, ISO 3016 and other equivalent international test methodologies.

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VWR®, Alternate Metals II, 4 components: Ca 500 mg/l, Na 500 mg/l, K 100 mg/l, Mg 100 mg/l in 2% HNO₃

Supplier: VWR Chemicals

Multi-Element Standard, Alternate Metals II (4 components), VWR®, Ca 500 mg/l, Na 500 mg/l, K 100 mg/l, Mg 100 mg/l, Matrix: 2% HNO₃, Application: ICP standards