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.

Silicone Viscosoty Standards for Rotational Viscometers

Supplier: CANNON INSTRUMENT

CANNON silicone viscosity standards are intended for use with rotational viscometers only.

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Petroleum standards, heavy mineral oils, CRM

Supplier: LGC Standards PROMOCHEM

This matrix material solution is intended for use as a diluent for other metallo-organic standards.

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Domestic sludge - metals, NIST-2781 standard

Supplier: LGC Standards PROMOCHEM

This standard reference material is intended to use in the evaluation of methods used for the analysis of sludges and other materials of a similar matrix. These are dried and pulverised domestic sludge.

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Viscosity standards, general purpose

Supplier: CANNON INSTRUMENT

These certified standards are useful for calibration and verification procedures.

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BNA Surrogates Mixture

Supplier: EHRENSTORFER

Stable isotope labelled product type, mixture format, dichloromethane solvent.

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Reference materials, metals in biodiesel Standard, VHG

Supplier: LGC Standards PROMOCHEM

This solution is intended for use as a calibration or reference standard for the analysis of these analytes in biodiesel or related organic matrices according to ASTM D6751. Sulfur is present in the raw materials and is not certified.

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Polystyrene film - IR transmission wavelength standards, NIST-1921B

Supplier: LGC Standards PROMOCHEM

NIST-1921B, Polystyrene film - IR transmission wavelength

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Elemental analysis standards, plastic clay, NIST-98B

Supplier: LGC Standards PROMOCHEM

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

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Reference standards, surface water - trace metals

Supplier: LGC Standards PROMOCHEM

This reference standard is intended for daily use in conjunction with measurement of elements in surface waters. The water solution contains 45 elements with concentrations traceable to
ultrapure metals or stoichiometrically well-defined substances.

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EPA Method 552 Halogenated Acetic Mixture 1000 µg/ml in Methyl tert-butyl ether

Supplier: EHRENSTORFER

EPA method 552 halogenated acetic mixture 1000 µg/ml in methyl tert-butyl ether, : N/A

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DSC calibration standard, benzoic acid

Supplier: LGC Standards PROMOCHEM

Benzoic acid, Melting pt.: 122.35 °C

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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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OEKO-TEX PAH Mixture

Supplier: EHRENSTORFER

Dichloromethane solvent, mixture product format.

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Environmental standards, DSJ PCB mixture, CIL

Supplier: LGC Standards PROMOCHEM

DSJ PCB mixture, unlabeled PCBs, CIL, 1 ml in isooctane, : 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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Ferromanganese, high carbon, alloy, NIST-68C, reference standard

Supplier: LGC Standards PROMOCHEM

This standard reference material is in the powder form intended for use in checking chemical methods of analysis and in calibration with instrumental methods of analysis.

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Elemental analysis standards, river sediment

Supplier: LGC Standards PROMOCHEM

River sediment - extractable metals, : N/A

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Standards for formaldehyde-2,4-dinitrophenyl-hydrazone, BCR®

Supplier: LGC Standards PROMOCHEM

Used on glass fibre filters.

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Elemental analysis standards, brick clay - constituents, NIST-679

Supplier: LGC Standards PROMOCHEM

Brick clay - constituents, : N/A

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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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Lithium ore, spodumene - lithium oxide, NIST standards

Supplier: LGC Standards PROMOCHEM

This reference standards are intended to use in checking the accuracy of assay methods. These are supplied in fine powder form.

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Reference standard, water saturated octanol, NIST

Supplier: LGC Standards PROMOCHEM

NIST-2890, water saturated octanol, NIST

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Indoor dust - trace elements, NIST-2584 standard

Supplier: LGC Standards PROMOCHEM

NIST-2584, indoor dust - trace elements, : N/A

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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.