You searched for: Standards

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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Negative Control (No bacterial growth expected) 0 CFU, for microbiology, certified reference material

Supplier: Merck

Certified Reference Microorganisms

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Fluoribacter bozemanae CECT® 7276 Vitroids™, Certified Reference Materials, Suitable for Microbiology, Supelco®

Supplier: Merck

Derived from CECT® strains.

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Raoultella planticola (formerly Klebsiella aerogenes) NCTC 9528 Lenticule® discs, 500-50000 CFU, for microbiology, certified reference material

Supplier: Merck

Certified Reference Microorganisms

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Genomic DNA of E. coli O157 (EDL 933), IRMM® certified Reference Material

Supplier: Merck

Certified for genomic DNA Eschericha coli O157, strain EDL 933 confirmed by fliC gene.

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Sulfite in Water, Certified Reference Material, Supelco®

Supplier: Merck

Sulphite in water, Supelco®, Application: UV/Visible

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Wavelength Calibration Solution for ICP-OES

Supplier: CUSTOM MADE CHEMICALS LAB

500 ml solution contains 50 mg/L Al, As, Ba,Cd, Co, Cr, Cu, Mn, Mo, Ni, Pb, Se, Sr, Zn and 500 mg/L K in 5% HNO₃.

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Reference standards, nitrogen standard set, CRM, VHG

Supplier: PROMOCHEM

These calibration standards are intended for use in the determination of low level nitrogen by ASTM Method D4629.

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GF AAS Multi element standard XVIII, 16 components in 5% HNO₃

Supplier: CUSTOM MADE CHEMICALS LAB

16 components: Ag 10 mg/l, Al 100 mg/l, As 100 mg/l, Ba 50 mg/l, Be 5 mg/l, Cd 5 mg/l, Co 50 mg/l, Cr 20 mg/l, Cu 50 mg/l, Fe 20 mg/l, Mn 20 mg/l, Ni 50 mg/l, Pb 100 mg/l, Sb 100 mg/l, Se 100 mg/l, Tl 100 mg/l in 5% HNO₃.

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2,2',3,4,4',5,5'-Heptachlorobiphenyl-[13C12] (PCB No. 180) 40 µg/ml in n-nonane (99% 13C), CIL

Supplier: PROMOCHEM

Organic Standard, 2,2',3,4,4',5,5'-Heptachlorobiphenyl-[13C12] (PCB No. 180) 40 µg/ml in n-nonane (99% 13C), Pack type: Glass bottle

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Baking chocolate standard, NIST-2384

Supplier: 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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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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Water standards for oils, Karl Fischer titration, CRM, VHG

Supplier: PROMOCHEM

This solution is intended for use as a certified reference material in the determination of water in motor oil by Karl Fischer titration.

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Reference Materials, Matrix Modifiers for GFAA, CRM, VHG, Promochem

Supplier: PROMOCHEM

This solution is intended for use as a matrix modifier for graphite furnace atomic absorption spectroscopy (GFAA) in the determination of trace elements.

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Glass - trace elements, NIST standards

Supplier: PROMOCHEM

This standard reference material is intended to facilitate the development of chemical methods of analysis for trace elements.

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Reference standards, biodiesel/diesel fuel Blends

Supplier: 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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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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Petroleum standards, heavy mineral oils, CRM

Supplier: 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: 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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VOAs in soil 1 - low level, Supelco®

Supplier: Merck

VOAs in soil 1 - low level, Supelco®, : N/A

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Complete Volatiles Kit - WP, Supelco®

Supplier: Merck

Complete Volatiles Kit - WP, Supelco®, : N/A

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Elemental analysis standards, plastic clay, NIST-98B

Supplier: 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.