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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$VWR®, Multi-Parameter Refractive Index and Density Certified Reference Material At 15, 20 and 25 °C$

VWR®, Multi-Parameter Refractive Index and Density Certified Reference Material At 15, 20 and 25 °C

Supplier: VWR Chemicals

The Refractive Index and Density Certified Reference Materials provide a flexible, cost-effective and efficient solution to any laboratory calibrating and/or verifying refractive index and density measurements – all from a single material.

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Wastewater inorganics quality control standard

Supplier: HACH

These mixed standards are ready to use, no dilutions are required. They contain ammonia nitrogen, nitrate nitrogen, COD, phosphate, sulphate and TOC.

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Chlorine standard solution

Supplier: HACH

For accuracy checks in chlorine determinations. Lot specific concentration displayed on label.

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Phosphorus standard solution

Supplier: HACH

Standard solution for accuracy checks in phosphorus determinations.

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Phosphate standard solutions

Supplier: HACH

Standard solution for accuracy checks in phosphate (phosphorus) determinations.

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VWR®, Smoke Point standard

Supplier: VWR Chemicals

Fuel testing Certified Reference Material for the calibration and verification of laboratory instruments used in testing petroleum and derivative products for Smoke Point ASTM D1322 / IP 57.

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VWR®, Synthetic Sea Water Analytical Reagent manufactured in accordance with ASTM D665 / IP 135

Supplier: VWR Chemicals

A high quality analytical reagent manufactured and certified compliant for use in ASTM D 665 / IP 135 the Standard Test Method for Rust-Preventing Characteristics of Inhibited Mineral Oil in the Presence of Water.

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VWR®, Sulphur, Certified Reference Materials, in synthetic diesel

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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Standard solution set (potassium dichromate solutions) for calibration of UV/Visible spectrophotometers

Supplier: VWR Chemicals

A set for linearity check of the absorbance of spectrophotometers.

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VWR®, Distillation standards for the petroleum industry, Certified Reference Materials

Supplier: VWR Chemicals

Distillation Certified Reference Materials are for the verification of laboratory instruments used in testing petroleum and derivative products for distillation at atmospheric pressure according to ASTM D86, IP 123, ISO 3405 and other such equivalent international methodology.

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Sulphite standard solution

Supplier: HACH

This equivalent standard is prepared with stabilised sodium thiosulfate, since sulphite is not a stable in solution.

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Standard solution, detergent

Supplier: HACH

For accuracy checks in detergents (surfactants) determinations.

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Gelex secondary standards kit for 2100 series turbidity meters

Supplier: HACH

Gelex secondary standards kit for 2100P and 2100Q series portable turbidimeters (includes 1 sealed vial each for 0 to 10 NTU, 10 to 100 NTU, 100 to 1000 NTU).