You searched for: 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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Low level anions, (CRM), Supelco®

Supplier: Merck

Low Level Anions, Supelco®, : N/A

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Anions on Filter Paper, Proficiency Testing Material, Supelco®

Supplier: Merck

Anions on Filter Paper, Supelco®, Proficiency Testing Material, : N/A

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Clean Sediment #2, (CRM), Supelco®

Supplier: Merck

Clean Sediment #2, Supelco®, : N/A, Pkg of 250 g

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Metals in impinger solution, proficiency testing material, Supelco®

Supplier: Merck

Metals in Impinger Solution, Supelco®, Proficiency Testing Material, : N/A

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Trace Elements in Fuel Oil

Supplier: Merck

Trace elements in fuel oil, Flash point: 61 °C

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TPH in Soil, (CRM), Supelco®

Supplier: Merck

TPH in Soil, Supelco®, Certified reference material, : N/A

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Nitrogen oxide in impinger solution, proficiency testing material, Supelco®

Supplier: Merck

Nitrogen Oxide in Impinger Solution, Supelco®, Proficiency Testing Material, : N/A

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Salinity - WP, Proficiency Testing Material, Supelco®

Supplier: Merck

Salinity - WP, Supelco®, Proficiency Testing Material, : N/A

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Trace Metals (Dissolved) - 2, (CRM), Supelco®

Supplier: Merck

Trace Metals (Dissolved) - 2, Supelco®, Certified reference material, : N/A

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Acidity (as CaCO₃), concentrate, (CRM), Supelco®

Supplier: Merck

Acidity (as CaCO3), concentrate, Supelco®, Certified reference material, : N/A

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Minerals - whole volume, (CRM), Supelco®

Supplier: Merck

Minerals - Whole Volume, Supelco®, Certified reference material, : N/A

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Sulfide in Soil - PT, Proficiency Testing Material, Supelco®

Supplier: Merck

Sulfide in Soil - PT, Supelco®, Proficiency Testing Material, : N/A

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Trace metals - taiwan clays, (CRM), Supelco®

Supplier: Merck

Trace Metals - Taiwan Clay 1, Supelco®, : N/A, Pkg of 50 g

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Hardness/TSS - Whole Volume, (CRM), Supelco®

Supplier: Merck

Hardness/TSS - Whole Volume, Supelco®, Certified reference material, : N/A

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Residual Chlorine - Constant Value, (CRM), Supelco®

Supplier: Merck

Residual Chlorine - Constant Value, Supelco®, Certified reference material, : N/A

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UV254 - Whole Volume - WS, Proficiency Testing Material, Supelco®

Supplier: Merck

UV254 - Whole Volume - WS, Supelco®, Proficiency Testing Material, : N/A

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Residual Free Chlorine (RFC) - WS, Proficiency Testing Material, Supelco®

Supplier: Merck

Residual Free Chlorine (RFC) - WS, Supelco®, Proficiency Testing Material, : N/A

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Organophosphorus pesticides Mix A, certified reference material, Supelco®

Supplier: Merck

Organophosphorus Pesticides Mix A, Supelco®, Certified reference material, 2000 mug/mL each component in hexane: acetone (9:1), : N/A

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EPA TCL Pesticides mix, certified reference material, Supelco®

Supplier: Merck

EPA TCL Pesticides Mix, Supelco®, Certified reference material, 2000 mug/mL each component in hexane: toluene (1:1), : N/A

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EPA 8260 volatiles calibration mix, certified reference material, Supelco®

Supplier: Merck

EPA 8260 Volatiles Calibration Mix, Supelco®, Certified reference material, 2000 mug/mL each component in methanol, : N/A

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EPA 608 pesticides mix, certified reference material, Supelco®

Supplier: Merck

EPA 608 Pesticides Mix, Supelco®, Certified reference material, 20 mug/mL each component in hexane: toluene (1:1), : N/A

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Oil and grease in seawater - whole volume - WP proficiency testing material, Supelco®

Supplier: Merck

Oil and Grease in Seawater - Whole Volume - WP, Proficiency Testing Material

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Fathead minnow (Pimephales promelas), Proficiency Testing Material, Supelco®

Supplier: Merck

Fathead minnow (Pimephales promelas), 7-day Chronic, daily renewal, MHSF, Proficiency Testing Material

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pH <791> PT, Proficiency Testing Material, Supelco®

Supplier: Merck

Suitable for 791 per USP. Proficiency Testing Kit containing three samples ranging from pH 5,0 to 10,00.

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Supelco® Colour Reference Solutions, set of colours B, BY, Y, GY, R, ampoules of 2 ml, Merck

Supplier: Merck

The kit contains set of brown(83951), yellow (83883), red (87448), greenish-yellow (82995), and brownish-yellow (86293) colour reference standards. The solutions are produced from three primary metal salt solutions of ferric(III) chloride, cobalt(II) chloride, and copper(II) sulfate pentahydrate, in accordance with chapter 2.2.2 ′Degree of colouration of liquids′ of the European Pharmacopoeia (Ph. Eur.).

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Total Acid Number (TAN) Standards

Supplier: CUSTOM MADE CHEMICALS LAB

Total acid number TAN 17034, 2 mg KOH/g

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Supelco® Colour Reference Solutions, set of colours BY, ampoules of 2 ml, Merck

Supplier: Merck

The kit contains a set of seven brownish yellow colour reference standards (identified sequentially from BY1 to BY7) and a 3.7% hydrogen chloride solution in water. The solutions are produced from three primary metal salt solutions of ferric(III) chloride, cobalt(II) chloride, and copper(II) sulfate pentahydrate, in accordance with chapter 2.2.2 ′Degree of colouration of liquids′ of the European Pharmacopoeia (Ph. Eur.).