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®, Colour standards, Platinum-Cobalt (Pt-Co, Hazen)

Supplier: VWR Chemicals

Ready to use colour solutions that are prepared gravimetrically on a weight/weight basis and are designed to measure the visual colour of water supplies.

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Turbidity standards calibration kit for 2100Q, Stablcal®

Supplier: HACH

Stablcal® calibration standards kit, for 2100 series portable turbidimeters. USEPA accepted for calibration purposes. Stablcal® stabilised formazin turbidity standards are true formazin dilutions developed for use in any turbidimeter.

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VWR®, Gardner colour standards

Supplier: VWR Chemicals

Ready to use colour solutions that are prepared gravimetrically on a weight/weight basis that are designed for grading the colour of similarly coloured liquids, such as resins, varnishes, lacquers, drying oils, fatty acids, lecithin's, sunflower and linseed oil.

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VWR®, Benzene 200 µg/ml in methanol, organic reference standard

Supplier: VWR Chemicals

Organic Standard, Benzene 200 µg/ml in methanol, Pack type: Glass ampoule

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VWR®, Chlorpyrifos, pesticide reference standard, 100 µg/ml in methanol

Supplier: VWR Chemicals

Organic Standard, Chlorpyrifos 100 µg/ml in methanol, Pack type: Glass ampoule

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Sulfate standard solution

Supplier: HACH

Standard solution for accuracy checks in sulfate determinations.

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Alkalinity standard solution, 25000 mg/L CaCO₃ (NIST)

Supplier: HACH

Standard solution for accuracy checks in alkalinity determinations.

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Pesticides Mix 2, EPA 608

Supplier: VWR Chemicals

Chlordane (0,02 mg/ml) and Toxaphene (0,20 mg/ml) in methanol.

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Iron standard solution

Supplier: HACH

For accuracy checks in iron determinations.

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VWR®, Standards for water determination by the Karl Fischer method

Supplier: VWR Chemicals

The tightening of regulatory requirements and the increasing demands of QA/QC methodology is becoming more important across all market sectors. The demand for standards to support testing methods continues to increase, and this growth applies to water determination according to Karl Fischer. Avantor now offers a complete range of Karl Fischer water standards as CRMs to calibrate and monitor equipment and check test results.

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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®, 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® ARISTAR® Multi-Component Anion Mix 9, Avantor

Supplier: VWR Chemicals

Two solutions - a nitrite standard solution and a 6 component multi-element standard solution.

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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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Turbidity standard, ULR verification kit, Stablcal®

Supplier: HACH

Stablcal® verification kit containing 0.10 NTU, 0.30 NTU, 0.50 NTU, 1.0 NTU standards (100 ml each), sililcone oil, oiling cloth and instructions is used for verification purpose only.