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.

Soil and sediment reference material for dioxin, PCB, pesticide, and other organic contaminant levels in soil

Supplier: LGC Standards PROMOCHEM

Natural matrix reference material (Soil) , : N/A

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Trace elements in water, NIST-1643F

Supplier: LGC Standards PROMOCHEM

This reference standards are intended to use in the determination of trace elements in fresh water. The solution contains nitric acid at a volume fraction of approximately 2%, equivalent to an amount of substance concentration (molarity) of approximately 0,32 mol/l and also it simulates the elemental composition of fresh water.

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Reference materials, acid number standards, total acid number (TAN)

Supplier: LGC Standards PROMOCHEM

Acid number reference materials are intended for use in the determination of acid number (AN) in petroleum products in accordance with ASTM D664/IP 177 (by potentiometric titration) or ASTM D974 (by colour-indicator titration).

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Reference materials, cloud point reference, VHG

Supplier: LGC Standards PROMOCHEM

These reference materials are intended for use in accordance with ASTM D2500 for the determination of the cloud point of petroleum products. The cloud point of a petroleum product is an index of the lowest temperature of their utility for certain applications.

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Combined six cation standard-II, Dionex™

Supplier: DIONEX

Ion standards are used for a variety of routine anion, cation, and standard determinations.

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Calibration standards for osmometers

Supplier: GONOTEC

Calibration standard, Osmolality: 850 mOsmol/kg, 10× 1 ml

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EP Reference Solution BY2, Brownish-Yellow Reference Standard

Supplier: RICCA CHEMICAL

EP reference solution BY2, Brownish-yellow standard solution, Glass bottle, amber

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Conductivity standard 2000 µS/cm (25 °C; 1000 ppm; NaCl) in aqueous solution

Supplier: RICCA CHEMICAL

Conductivity standard 2000 µS/cm (1000 ppm; NaCl) in aqueous solution, 2000 µS/cm, Reference temperature: 25 °C

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EP Reference Solution BY4, Brownish-Yellow Reference Solution

Supplier: RICCA CHEMICAL

EP Reference solution BY4, brownish-yellow reference solution, Glass bottle, amber

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Pharmaceutical residual solvents, USP <467> singles

Supplier: Restek

The United States Pharmacopeia (USP)<467> residual solvents is a widely used compendial method intended for identifying and quantifying residual solvents in drug substances, drug products, and excipients.

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Standards and test mixes for liquid chromatography

Supplier: Restek

Linear detector responses to concentration variations are an important part of operation qualification (OQ) for LC instruments. Kit of five aqueous solutions of caffeine can be used to generate simple plots of UV response versus concentration.