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 re-established conditions will yield optimal working performance. Calibrating with concentrated standards eliminates the possibility that environmental changes will induce instrumental miscalculation when accuracy matters most.

Elemental analysis standards, phosphate rock, western, NIST-694

Supplier: LGC Standards PROMOCHEM

This standard material is intended to use in validating analytical methods and in calibrating instruments used in the analysis of phosphate rock, fertilisers and similar materials.

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Biodiesel blank, VHG

Supplier: LGC Standards PROMOCHEM

This solution for using as calibration blank for biodiesel metals and sulphur analysis.

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Baking chocolate standard, NIST-2384

Supplier: LGC Standards PROMOCHEM

This reference material intended to use in validating methods for determining proximates, fatty acids, calories, vitamins, elements, catechins, caffeine, theobromine, and acrylamide in baking chocolate and similar matrices. It can be used for quality assurance in-house control materials.

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Potassium Dichromate Solution for Absorbance Control

Supplier: CPACHEM

2×10 ml Potassium dichromate solution for absorbance control 235 - 350 nm and 6×10 ml

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Metal alloy standards, gray cast iron, CRM

Supplier: LGC Standards PROMOCHEM

Grey cast iron (carbon + sulfur), NIST-334

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Pesticide reference standard, δ-BHC 100 µg/ml in methanol

Supplier: AccuStandard

Organic Standard, δ-BHC 100 µg/ml in methanol, Pack type: Glass bottle

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Pesticide reference standard, Endrin 100 µg/ml in methanol

Supplier: AccuStandard

Organic Standard, Endrin 100 µg/ml in methanol, Pack type: Glass bottle

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Low alloy steel standard

Supplier: LGC Standards PROMOCHEM

This reference material is intended for use in the evaluation of chemical and instrumental analysis and in calibration of those methods.

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62,4 mg/ml CuSO₄.5H₂O

Supplier: CPACHEM

The colour standard is specially intended for use in testing ChP and monographs. This solution was produced according to the specifications using ChP reagent quality components and water meeting the ChP monograph requirement for purified water.

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Estuarine sediment standard - metals, NIST-1646A

Supplier: LGC Standards PROMOCHEM

NIST-1646A, estuarine sediment - metals, : N/A

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Reference materials, acid number standards, in hydrocarbon oil, VHG

Supplier: LGC Standards PROMOCHEM

These 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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Pesticide reference standard, 4,4'-TDE 100 µg/ml in methanol

Supplier: AccuStandard

Organic Standard, 4,4'-TDE 100 µg/ml in methanol, Pack type: Glass bottle

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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 standards, biodiesel/diesel fuel Blends

Supplier: LGC Standards PROMOCHEM

These standards are intended for use as calibration and reference standards for the determination of fatty acid methyl esters (FAME) biodiesel content in diesel fuel by infrared (IR) spectroscopy. They are formulated specifically for use with ASTM Method D7371 and EN 14078.

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

Supplier: LGC Standards PROMOCHEM

Heavily contaminated sediment reference material , : N/A

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Elemental analysis standards, PTP sample of oils, VHG

Supplier: LGC Standards PROMOCHEM

The PTP has been specially designed for analytical laboratories that analyse new and used oils for metals, sulphur, viscosity and particle count.

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Hydrazine Sulphate Solution

Supplier: CUSTOM MADE CHEMICALS LAB

Hydrazine sulphate solution, : N/A

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Elemental analysis standards, flint clay - constituent elements, NIST-97B

Supplier: LGC Standards PROMOCHEM

This standard reference material is intended for use in the determination of constituent elements in clay and material of similar matrix. Powdered clay was air-dried, ball-milled and blended to ensure homogeneity.

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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 standards, waste water - trace metals

Supplier: LGC Standards PROMOCHEM

This Reference material is intended for daily use in conjunction with measurement of elements in wastewaters. The water solution contains 13 elements with concentrations traceable to ultra pure metals or stoichiometrically well-defined substances.

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Metal alloy standards, cast iron (Ni-Cr-Mo), NIST, CRM

Supplier: LGC Standards PROMOCHEM

NIST-107C, cast iron (Ni-Cr-Mo)

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Reference standard, water saturated octanol, NIST

Supplier: LGC Standards PROMOCHEM

NIST-2890, water saturated octanol, NIST

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Hard Drinking Water UK Low Level Metals

Supplier: LGC Standards PROMOCHEM

Hard drinking water UK low level metals, : N/A

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Calibration reference materials, alloys

Supplier: PerkinElmer

Perkalloy, three 50,8 mm pieces (596 °C)

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Conductivity Calibration Solution

Supplier: Endress+Hauser

Precision solution referred to SRM of NIST.

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Elemental analysis standards, custom blend S-21+K, CONOSTAN

Supplier: LGC Standards PROMOCHEM

Custom blend S-21+K, CONOSTAN®, 885 ppm

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Elemental analysis standards, portland cement (Ivory)

Supplier: LGC Standards PROMOCHEM

These are intended primarily for the evaluation and calibration of methods for analysis of cements and materials of similar matrix.

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Calcinated petroleum coke - trace elements

Supplier: LGC Standards PROMOCHEM

This reference standard is intended primarily for use in the calibration of apparatus and the evaluation of techniques employed in the analysis of calcined petroleum coke and other materials with a similar matrix.