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® AVS TITRINORM, Sulphur Standard Solution, 1000 mg/L S in Water, Standard for AAS

Supplier: VWR Chemicals

Sulphur Standard, 1000 mg/L, VWR® AVS TITRINORM, Sulphur, Matrix: H₂O, Application: AAS standards

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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® PESTINORM®, Tetrahydrofuran (THF), Secondary Reference Standard for GC

Supplier: VWR Chemicals

A secondary GC solvent reference standard for various chromatographic and analytical applications.

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Tyloxapol, Reference Standard

Supplier: USP

USP Reference Standards are specified for use in conducting official USP–NF tests and assays. USP also provides Reference Standards specified in the Food Chemicals Codex as well as authentic substances—high-quality chemical samples—as a service to analytical, clinical, pharmaceutical and research laboratories. To confirm accuracy and reproducibility, USP Reference Standards are rigorously tested and evaluated by multiple independent laboratories including USP, commercial, regulatory, and academic labs. USP also provide publicly available, official documentary standards for pharmaceutical ingredients in the USP–NF that link directly with our primary reference standards.

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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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VWR®, Perchlorate 1,000 mg/l in Water standard for ion chromatography

Supplier: VWR Chemicals

Perchlorate 1,000 mg/l in water standard for ion chromatography, 1000 mg/l, VWR®, Contents: KClO₄ in H₂O, Application: Ion chromatography standards

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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®, Matrix: NaOH 1%, Application: Ion chromatography standards

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VWR®, Pure Water viscosity standard

Supplier: VWR Chemicals

Pure Water viscosity standard have certified data for kinematic viscosity, dynamic viscosity and density at 5, 20, 25 and 37 °C.

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VWR® PESTINORM®, 2,2,4-Trimethylpentane, Secondary Reference Standard for GC

Supplier: VWR Chemicals

A secondary GC solvent reference standard for various chromatographic and analytical applications.

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VWR® ARISTAR®, Multi-Element Calibration Standard IV in dil. Nitric Acid for ICP

Supplier: VWR Chemicals

Multi-Element Standard, Multi-element calibration standard IV in dil. nitric acid for ICP, VWR® ARISTAR®, Application: ICP standards

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VWR®, Rhodium standard solution, 1,000 mg/l Rh in 5% hydrochloric acid AVS TITRINORM standard for AAS

Supplier: VWR Chemicals

Rhodium Standard, 1000 mg/L, VWR®, Rhodium, Matrix: 5% HCl, Application: AAS standards

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VWR®, Flow Cup viscosity standards

Supplier: VWR Chemicals

Flow Cup viscosity standards are specifically formulated for use with viscosity flow cups such as Ford, Shell and Zahn.

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VWR® PESTINORM®, 1,4-Dioxane, Stabilised, Secondary Reference Standard for GC

Supplier: VWR Chemicals

Stabilised with BHT (2,6-Di-tert-butyl-p-cresol, 2,6-Di-tert-butyl-4-methylphenol, Ionol) 20 ppm. A secondary GC solvent reference standard for various chromatographic and analytical applications.

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VWR®, Silicone Rotational viscosity standards

Supplier: VWR Chemicals

Silicone Rotational viscosity standards are specifically formulated for use with equipment with minimal temperature control. Supplied in 600 ml 'ready to use' packs specially designed to eliminate cleaning of laboratory glassware, which is inherently difficult due to the nature of silicone.