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7295 results for Standards

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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.

Tripentyltin chloride surrogate

Tripentyltin chloride surrogate

Supplier: Restek

Tripentyltin chloride, 2000 μg/ml in methylene chloride, : N/A, 1 ml/ampul

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EPA method 8310 PAH mixture

EPA method 8310 PAH mixture

Supplier: Restek

EPA method 8310 PAH mixturecontain 18 components.

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Organic reference standard, Perfluorodecanoic acid 50 µg/ml in methanol

Supplier: MARKET SOURCE PART PROCESS

Organic Standard, Perfluorodecanoic acid 50 µg/ml in methanol, Pack type: Glass bottle

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Appendix IX mix #2

Supplier: Restek

Appendix IX mix, contains 32 components.

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DNPH reference materials

Supplier: Restek

The reported concentrations reflect the amount of aldehyde or ketone in the mixture.The concentration of derivatised aldehyde or ketone is not reported.

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MA fractionation surrogate spike mix (2 components)

MA fractionation surrogate spike mix (2 components)

Supplier: Restek

This MA fractionation surrogate spike mix contains two components: 2-Bromonaphthalene and 2-Fluorobiphenyl.

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TNRCC 1005 retention time marker mix (9 components)

TNRCC 1005 retention time marker mix (9 components)

Supplier: Restek

This TNRCC 1005 retention time marker mix used during initial sample screening to determine retention time windows for each petroleum product.

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CLP 04.1 BNA surrogate mix (8 components)

CLP 04.1 BNA surrogate mix (8 components)

Supplier: Restek

The mix consists of components such as 2-chlorophenol-d4 (1500 μg/ml), 1,2-dichlorobenzene-d4 (1000 μg/ml), 2-fluorobiphenyl (1000 μg/ml), 2-fluorophenol (1500 μg/ml), nitrobenzene-d5 (1000 μg/ml).

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Elemental analysis standards, custom blend S-21+K, CONOSTAN

Supplier: LGC Standards PROMOCHEM

Custom blend S-21+K, CONOSTAN®, 885 ppm

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California oxygenates mix (5 components)

California oxygenates mix (5 components)

Supplier: Restek

The california oxygenates mix consists of five components they are tert-amyl methyl ether (TAME) 2000 μg/ml, tert-butanol (TBA) 10000 μg/ml, diisopropyl ether (DIPE) 2000 μg/ml, ethyl-tert-butyl ether (ETBE) 2000 μg/ml and methyl tert-butyl ether (MTBE) 2000 μg/ml.

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Alaska UST method AK101AA

Alaska UST method AK101AA

Supplier: Restek

The alaska UST method consists of 14 components they are benzene, ethylbenzene, 1-ethyl-2-methylbenzene, 1-ethyl-3-methylbenzene, 1-ethyl-4-methylbenzene, isopropylbenzene (cumene), n-propylbenzene, toluene, 1,2,3-trimethylbenzene, 1,2,4-trimethylbenzene, 1,3,5-trimethylbenzene, m-xylene, o-xylene and p-xylene.

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Isocyanates singles

Isocyanates singles

Supplier: Restek

OSHA 47 is for 4,4'-methylenediphenyl isocyanate (4,4'-MDI) in indoor air, and NIOSH Method 5522 is for 2,4-TDI; 2,6-TDI; 4,4'-MDI; and 1,6-hexamethylene diisocyanate (1,6-HDI) in air. Restek offers the 1,-(2-pyridyl)piperzine (1-2pp) derivative.

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8270 calibration mix #1 (19 components)

8270 calibration mix #1 (19 components)

Supplier: Restek

Contains: Benzoic acid (65-85-0); 4-Chloro-3-methylphenol (59-50-7); 2-Chlorophenol (95-57-8); 2,4-Dichlorophenol (120-83-2); 2,6-Dichlorophenol (87-65-0); 2,4-Dimethylphenol (105-67-9); 4,6-Dinitro-2-methylphenol (Dinitro-o-cresol) (534-52-1); 2,4-Dinitrophenol (51-28-5); Dinoseb (88-85-7); 2-Methylphenol (o-cresol) (95-48-7); 3-Methylphenol (m-cresol) (108-39-4); 4-Methylphenol (p-cresol) (106-44-5); 2-Nitrophenol (88-75-5); 4-Nitrophenol (100-02-7); Pentachlorophenol (87-86-5); Phenol (108-95-2); 2,3,4,6-Tetrachlorophenol (58-90-2); 2,4,5-Trichlorophenol (95-95-4); 2,4,6-Trichlorophenol (88-06-2)

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

Supplier: LGC Standards PROMOCHEM

Used on glass fibre filters.

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Environmental standards, WHO Dioxin-like PCB mixtures, in isooctane

Supplier: LGC Standards PROMOCHEM

WHO coplanar and mono-ortho PCBs, 1,2 ml in isooctane, : N/A

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Oil analysis standards, phosphorus in 20 blank oil, CONOSTAN®

Supplier: LGC Standards PROMOCHEM

Phosphorus in 20 blank oil, 1000 µg/g

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Elemental analysis standards, portland cement type Ⅲ, NIST-1887B

Supplier: LGC Standards PROMOCHEM

These are intended primarily for the evaluation and calibration of methods for analysis of cements and materials of similar matrix.

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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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Indoor dust - trace elements, NIST-2584 standard

Supplier: LGC Standards PROMOCHEM

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

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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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Elemental analysis standards, river sediment

Supplier: LGC Standards PROMOCHEM

River sediment - extractable metals, : N/A

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Standards for Lead paint films for childrens' products, NIST-2569

Supplier: LGC Standards PROMOCHEM

Lead paint films for children's products, : 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.

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Low alloy steel standard

Supplier: LGC Standards PROMOCHEM

This reference material is intended for use in the evaluation of chemical and instrumental analysis and in calibration of those methods.

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Reference materials, acid number standards, total acid number (TAN)

Supplier: LGC Standards PROMOCHEM

Acid number 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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Ferrotitanium alloy, reference standard, NCS

Supplier: LGC Standards PROMOCHEM

Ferrotitanium, NCS

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Reference standards, soil, BTEX - Loamy Sand 1, CRM

Supplier: LGC Standards PROMOCHEM

BTEX - Loamy Sand 1, (5 analytes), : N/A

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Elemental analysis standards for particle count analysis, VHG

Supplier: LGC Standards PROMOCHEM

PTP sample for particle count analysis, VHG, 125 ml, VHG

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Whole milk powder, NIST-1549A

Supplier: LGC Standards PROMOCHEM

This reference standard is intended for validation of methods for determining proximates, fatty acids, cholestrol, vitamins, elements and amino acids in whole milk powder and similar materials.

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