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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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Acetic Acid (31)

Supplier: CUSTOM MADE CHEMICALS LAB

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

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Elemental analysis standards, river sediment

Supplier: PROMOCHEM

River sediment - extractable metals, : N/A

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

Supplier: PROMOCHEM

Brick clay - constituents, : N/A

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Standard reference material, strawberry leaves - trace elements

Supplier: PROMOCHEM

This standard is intended for use in development, validation and quality control of analytical methods for the determination of elements in vegetation.

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Organic reference standard, Dibenz[a,h]anthracene 100 µg/ml in acetonitrile

Supplier: PROMOCHEM

Organic Standard, Dibenz[a,h]anthracene 100 µg/ml in acetonitrile, Pack type: Glass bottle

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Impurity and API standard, (6RS)-3-[2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)piperidin-1-yl]ethyl]-2,6-dimethyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one

Supplier: PROMOCHEM

Organic Standard, (6RS)-3-[2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)piperidin-1-yl]ethyl]-2,6-dimethyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one

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DSC calibration standard, benzoic acid

Supplier: PROMOCHEM

Benzoic acid, Melting pt.: 122.35 °C

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Organic reference standard, Vanillic acid 10 µg/ml in methanol

Supplier: PROMOCHEM

Organic Standard, Vanillic acid 10 µg/ml in methanol, Pack type: Glass bottle

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Organic reference standard, 3-Chlorobiphenyl (PCB No. 2) 35 µg/ml in isooctane, CIL

Supplier: PROMOCHEM

Organic Standard, 3-Chlorobiphenyl (PCB No. 2) 35 µg/ml in isooctane, Pack type: Glass bottle

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Impurity and API standard, 1-benzyl-4-[(5,6-dimethoxy-2,3-dihydro-1H-inden-2-yl)methyl]piperidine

Supplier: PROMOCHEM

Organic Standard, 1-Benzyl-4-[(5,6-dimethoxy-2,3-dihydro-1H-inden-2-yl)methyl]piperidine

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Pesticide reference standard, (±)-α-BHC 100 µg/ml in n-nonane, CIL

Supplier: PROMOCHEM

Organic Standard, (±)-α-BHC 100 µg/ml in n-nonane, Pack type: Glass bottle

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

Supplier: PROMOCHEM

NIST-1921B, Polystyrene film - IR transmission wavelength

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Organic reference standard, 3,5-Dinitrotoluene 100 µg/ml in methanol

Supplier: PROMOCHEM

Organic Standard, 3,5-Dinitrotoluene 100 µg/ml in methanol, Pack type: Glass bottle

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Holmium Oxide Solution for Wavelength Control

Supplier: CPACHEM

Holmium oxide solution for wavelength control acc. 2.2.25 of Ph Eur

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Standard reference material, spinach leaves - trace elements, NIST-1570A

Supplier: PROMOCHEM

This standard material is intended for use in evaluating the reliability of analytical methods for the determination of major, minor, and trace elements, proximates, calories and total dietary fiber in botanical materials, agricultural food products, and materials of similar matrix.

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Palladium standard solution, for ICP, in 20% HCl, VHG

Supplier: PROMOCHEM

The solutions are intended for use as a certified reference material or calibration standard for inductively coupled plasma optical emission spectroscopy (ICP-OES), inductively coupled plasma mass spectrometry (ICP-MS), flame or furnace atomic absorption spectroscopy (AA or GFAA), x-ray fluorescence spectroscopy (XRF), and other techniques for elemental analysis.

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Organic reference standard, Cefradine CRS, Ph.Eur., RS

Supplier: EDQM

Filled under inert atmosphere and controlled humidity.

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Domestic sludge - metals, NIST-2781 standard

Supplier: 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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Combined density and refractometry standards

Supplier: METTLER TOLEDO

These combined reference standards are intended to reduce uncertainty, eliminate time-consuming and error prone sample transfer and facilitate fully automatic performance verification.

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Reference materials, metals in biodiesel Standard, VHG

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

Supplier: PROMOCHEM

Used on glass fibre filters.

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Impurity and API standards, 3-O-methylatorvastatin calcium salt

Supplier: PROMOCHEM

Organic Standard, (3R,5R)-7-[2-(4-Fluorophenyl)-3-phenyl-4-(phenylcarbamoyl)-5-(propan-2-yl)-1H-pyrrol-1-yl]-5-hydroxy-3-methoxyheptanoic acid calcium salt

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

Supplier: 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).