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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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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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ASTM® D2887 reference gas oil, analytical standard, Supelco®

Supplier: Merck

ASTM(R) D2887 Reference Gas Oil, Supelco®, Pk Info: pkg of 6 x 1 mL

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ASTM® D4815 valve timing mix, analytical standard, Supelco®

Supplier: Merck

ASTM(R) D4815 Valve Timing Mix, Supelco®, (each component at the nominal wt% indicated)

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Organic reference standard, 2,2',3,3',5,5',6-Heptachlorobiphenyl (PCB No. 178) 35 µg/ml in isooctane, CIL

Supplier: PROMOCHEM

Organic Standard, 2,2',3,3',5,5',6-Heptachlorobiphenyl (PCB No. 178) 35 µg/ml in isooctane, Pack type: Glass bottle

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Organic reference standard, 2,3,3',4,4',5,5'-Heptachlorobiphenyl (PCB No. 189) 100 µg/ml in isooctane, CIL

Supplier: PROMOCHEM

Organic Standard, 2,3,3',4,4',5,5'-Heptachlorobiphenyl (PCB No. 189) 100 µg/ml in isooctane, Pack type: Glass bottle

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Organic reference standard, 2,2',3,3',4,4',5-Heptachlorobiphenyl (PCB No. 170) 100 µg/ml in isooctane, CIL

Supplier: PROMOCHEM

Organic Standard, 2,2',3,3',4,4',5-Heptachlorobiphenyl (PCB No. 170) 100 µg/ml in isooctane, Pack type: Glass bottle

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Organic reference standard, 2,2',3,4,4',6,6'-Heptachlorobiphenyl (PCB No. 184) 35 µg/ml in isooctane, CIL

Supplier: PROMOCHEM

Organic Standard, 2,2',3,4,4',6,6'-Heptachlorobiphenyl (PCB No. 184) 35 µg/ml in isooctane, Pack type: Glass bottle

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Organic reference standard, 2,2',3,4',5,5'-Hexachlorobiphenyl (PCB No. 146) 100 µg/ml in isooctane, CIL

Supplier: PROMOCHEM

Organic Standard, 2,2',3,4',5,5'-Hexachlorobiphenyl (PCB No. 146) 100 µg/ml in isooctane, Pack type: Glass bottle

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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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Organic reference standard, 2,2',3,3',4,6,6'-Heptachlorobiphenyl (PCB No. 176) 35 µg/ml in isooctane, CIL

Supplier: PROMOCHEM

Organic Standard, 2,2',3,3',4,6,6'-Heptachlorobiphenyl (PCB No. 176) 35 µg/ml in isooctane, Pack type: Glass bottle

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Organic reference standard, 2,2',3,4,4',5,5'-Heptachlorobiphenyl (PCB No. 180) 35 µg/ml in isooctane, CIL

Supplier: PROMOCHEM

Organic Standard, 2,2',3,4,4',5,5'-Heptachlorobiphenyl (PCB No. 180) 35 µg/ml in isooctane, Pack type: Glass bottle

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Organic reference standard, 2,3',4,4',5,5'-Hexachlorobiphenyl (PCB No. 167) 100 µg/ml in isooctane, CIL

Supplier: PROMOCHEM

Organic Standard, 2,3',4,4',5,5'-Hexachlorobiphenyl (PCB No. 167) 100 µg/ml in isooctane, Pack type: Glass bottle

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Organic reference standard, 2,2',3,3',4,6-Hexachlorobiphenyl (PCB No. 131) 35 µg/ml in isooctane, CIL

Supplier: PROMOCHEM

Organic Standard, 2,2',3,3',4,6-Hexachlorobiphenyl (PCB No. 131) 35 µg/ml in isooctane, Pack type: Glass bottle

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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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Organic reference standard, 3,3',4,4',5,5'-Hexachlorobiphenyl (PCB No. 169) 35 µg/ml in isooctane, CIL

Supplier: PROMOCHEM

Organic Standard, 3,3',4,4',5,5'-Hexachlorobiphenyl (PCB No. 169) 35 µg/ml in isooctane, Pack type: Glass bottle

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Organic reference standard, 2,2',3,4',5,5',6-Heptachlorobiphenyl (PCB No. 187) 100 µg/ml in isooctane, CIL

Supplier: PROMOCHEM

Organic Standard, 2,2',3,4',5,5',6-Heptachlorobiphenyl (PCB No. 187) 100 µg/ml in isooctane, Pack type: Glass bottle

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Organic reference standard, 2,2',3,3',4,4'-Hexachlorobiphenyl (PCB No. 128) 35 µg/ml in isooctane, CIL

Supplier: PROMOCHEM

Organic Standard, 2,2',3,3',4,4'-Hexachlorobiphenyl (PCB No. 128) 35 µg/ml in isooctane, Pack type: Glass bottle

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Organic reference standard, 2,2',3,3',4,5,5',6-Octachlorobiphenyl (PCB No. 198) 35 µg/ml in isooctane, CIL

Supplier: PROMOCHEM

Organic Standard, 2,2',3,3',4,5,5',6-Octachlorobiphenyl (PCB No. 198) 35 µg/ml in isooctane, Pack type: Glass bottle

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Organic reference standard, 2,2',3,3',5,5'-Hexachlorobiphenyl (PCB No. 133) 35 µg/ml in isooctane, CIL

Supplier: PROMOCHEM

Organic Standard, 2,2',3,3',5,5'-Hexachlorobiphenyl (PCB No. 133) 35 µg/ml in isooctane, Pack type: Glass bottle

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Organic reference standard, 2,2',3,3',4,5,5'-Heptachlorobiphenyl (PCB No. 172) 100 µg/ml in isooctane, CIL

Supplier: PROMOCHEM

Organic Standard, 2,2',3,3',4,5,5'-Heptachlorobiphenyl (PCB No. 172) 100 µg/ml in isooctane, Pack type: Glass bottle

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Organic reference standard, 2,2',4,4',6,6'-Hexachlorobiphenyl (PCB No. 155) 35 µg/ml in isooctane, CIL

Supplier: PROMOCHEM

Organic Standard, 2,2',4,4',6,6'-Hexachlorobiphenyl (PCB No. 155) 35 µg/ml in isooctane, Pack type: Glass bottle

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Organic reference standard, 2,3,3',4,4',5,6-Heptachlorobiphenyl (PCB No. 190) 35 µg/ml in isooctane, CIL

Supplier: PROMOCHEM

Organic Standard, 2,3,3',4,4',5,6-Heptachlorobiphenyl (PCB No. 190) 35 µg/ml in isooctane, Pack type: Glass bottle

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ASTM® D4815 Qualitative peak ID mix, analytical standard, Supelco®

Supplier: Merck

ASTM(R) D4815 Qualitative Peak ID Mix, Supelco®, (each component at the nominal wt% indicated)

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Sulfuric Acid TS

Supplier: CUSTOM MADE CHEMICALS LAB

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Reference materials, base number standards, in hydrocarbon oil

Supplier: PROMOCHEM

These reference materials are intended for use in the determination of base number (AN) in petroleum products in accordance with ASTM D2896/IP 276 (by potentiometric perchloric acid titration) or ASTM D4739 (by potentiometric titration).