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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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Organic reference standard, 2,2',3,3',4,4',5-Heptachlorobiphenyl (PCB No. 170) 35 µg/ml in isooctane, CIL

Supplier: PROMOCHEM

Organic Standard, 2,2',3,3',4,4',5-Heptachlorobiphenyl (PCB No. 170) 35 µg/ml in isooctane, Pack type: Glass bottle

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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).

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Impurity and API standard, 3-[2-[4-[(Z)-(2,4-difluorophenyl)(hydroxyimino)methyl]piperidin-1-yl]ethyl]-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one

Supplier: PROMOCHEM

Organic Standard, 3-[2-[4-[(Z)-(2,4-difluorophenyl)(hydroxyimino)methyl]piperidin-1-yl]ethyl]-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one

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ASTM® D5442 C12-C60 qualitative retention time mix, analytical standard, Supelco®

Supplier: Merck

ASTM(R) D5442 C12-C60 Qualitative Retention Time Mix, Supelco®, 6.25 % (w/w) each component

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Reference standards, PAH mixture 15

Supplier: PROMOCHEM

According to EU recommendation about the determination of carcinogenic PAHs in food (2005/108/EC) .

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Mangenese ore - constituents

Supplier: PROMOCHEM

Manganese Standard, NIST-25D Mangenese ore - constituents, Manganese, Application: Calibration

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Organic reference standard, 2,2',3,3',4,4',5,6,6'-Nonachlorobiphenyl (PCB No. 207) 35 µg/ml in isooctane, CIL

Supplier: PROMOCHEM

Organic Standard, 2,2',3,3',4,4',5,6,6'-Nonachlorobiphenyl (PCB No. 207) 35 µg/ml in isooctane, Pack type: Glass bottle

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Organic reference standard, 2,2',3,3',4,4',5,6'-Octachlorobiphenyl (PCB No. 196) 35 µg/ml in isooctane, CIL

Supplier: PROMOCHEM

Organic Standard, 2,2',3,3',4,4',5,6'-Octachlorobiphenyl (PCB No. 196) 35 µg/ml in isooctane, 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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ASTM® D5441 MTBE contaminants (low) mix B, analytical standard, Supelco®

Supplier: Merck

ASTM(R) D5441 MTBE Contaminants (low) Mix B, Supelco®, 0.1 % (w/w) each component in methyl tert-butyl ether

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Environmental standard for TOC, BOD, CBOD, COD, DOC demand - whole volume, certified reference material, Supelco®

Supplier: Merck

Demand - Whole Volume, Supelco®, : N/A, Matrix: H₂O

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Ginkgo biloba (extract), NIST-3247

Supplier: PROMOCHEM

This standard reference material is intended primarily for use in validating analytical methods for the determination of flavonoids, terpene lactones and toxic elements in ginkgo biloba extracts and similar matrices. It can be also used for quality assurance when assigning values to in-house control materials.

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Sigma-Aldrich colour chart, analytical standard, Supelco®

Supplier: Merck

Colour reference table for solids.

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Phenanthrene-[D10] 200 µg/ml in isooctane (98% D), CIL

Supplier: PROMOCHEM

Organic Standard, Phenanthrene-[D10] 200 µg/ml in isooctane (98% D), Pack type: Glass bottle

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Acrylamide-d3 (1,0 mg/ml in Deionised Water with 0,1% Formic Acid)

Supplier: PROMOCHEM

Organic Standard, Acrylamide-d3 (1,0 mg/ml in deionised water with 0,1% formic acid)

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Iron ore

Supplier: PROMOCHEM

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

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Chrysene-[D12] 200 µg/ml (98% D), CIL

Supplier: PROMOCHEM

Organic Standard, Chrysene-[D12] 200 µg/ml (98% D), Pack type: Glass bottle

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Fuel oil - trace elements, NIST-1634C reference material

Supplier: PROMOCHEM

NIST-1634C standard, fuel oil- trace elements

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Impurity and API standard, (2S,5R,6R)-6-[[(2R)-2-[[(2R)-2-Amino-2-(4-hydroxyphenyl)acetyl]amino]-2-(4-hydroxyphenyl)acetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylicacid

Supplier: PROMOCHEM

Organic Standard, (2S,5R,6R)-6-[[(2R)-2-[[(2R)-2-amino-2-(4-hydroxyphenyl)acetyl]amino]-2-(4-hydroxyphenyl)acetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid

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PipeCheck standards for checking volumes of pipettes by photometry, Spectroquant®, Supelco®

Supplier: Merck

Check solutions (4x6 cells) and reference solutions (4 cells ) for checking the volume of pipettes Spectroquant®, Spectroquant®

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Fluorene-[D10] 200 µg/ml in isooctane (98% D), CIL

Supplier: PROMOCHEM

Organic Standard, Fluorene-[D10] 200 µg/ml in isooctane (98% D), Pack type: Glass bottle

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Anthracene-[D10] 200 µg/ml in isooctane (98% D), CIL

Supplier: PROMOCHEM

Organic Standard, Anthracene-[D10] 200 µg/ml in isooctane (98% D), Pack type: Glass bottle

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Benzophenone-[D10] 100 µg/ml in n-nonane (98% D)

Supplier: PROMOCHEM

Organic Standard, Benzophenone-[D10] 100 µg/ml in n-nonane (98% D), Pack type: Glass bottle

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Carbamazepine-[ring-D10] 100 µg/ml (98% D), CIL

Supplier: PROMOCHEM

Organic Standard, Carbamazepine-[ring-D10] 100 µg/ml (98% D), Pack type: Glass bottle

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Benzyl butyl phthalate-[ring-D4] 100 µg/ml in n-nonane (98% D), CIL

Supplier: PROMOCHEM

Organic Standard, Benzyl butyl phthalate-[ring-D4] 100 µg/ml in n-nonane (98% D), Pack type: Glass bottle

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Bis(2-ethylhexyl) phthalate-[ring-D4] 100 µg/ml in n-nonane (98% D), CIL

Supplier: PROMOCHEM

Organic Standard, Bis(2-ethylhexyl) phthalate-[ring-D4] 100 µg/ml in n-nonane (98% D), Pack type: Glass bottle

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2,5-Dichlorobiphenyl-[13C12] (PCB No. 9) 40 µg/ml in n-nonane (99% 13C), CIL

Supplier: PROMOCHEM

Organic Standard, 2,5-Dichlorobiphenyl-[13C12] (PCB No. 9) 40 µg/ml in n-nonane (99% 13C), Pack type: Glass bottle

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Saccharomyces cerevisiae NCPF 3191 Lenticule® discs, 500-50000 CFU, for microbiology, certified reference material

Supplier: Merck

Certified Reference Microorganisms

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Escherichia coli O157 (NT) NCTC 12900 Low count Lenticule® discs 30-120 CFU, for microbiology, certified reference material

Supplier: Merck

Certified Reference Microorganisms

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ICP-MS Setup Solution: Be, Ce, Fe, In, Li, Mg, Pb, U at 1 µg/L in 1% HNO₃

Supplier: PROMOCHEM

Multi-Element Standard, ICP-MS setup solution (8 components), 1 µg/ml each of Be, Ce, Fe, In, Li, Mg, Pb, U, Matrix: H₂O/tr HNO₃, Application: ICP-MS standards