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20443 results for "standards"

standards

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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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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PIC (paired ion chromatography) reagents for separation by reverse phase chromatography

Supplier: WATERS

Standards for Ion Pair Chromatography, Paired-ionic chromatography reagent B7, heptane sulfonic acid

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EPA method 8310 quality control check (18 components)

EPA method 8310 quality control check (18 components)

Supplier: Restek

The compund consists of components such as, acenaphthene (100 μg/ml), acenaphthylene (100 μg/ml), anthracene (100 μg/ml), benz(a)anthracene (10 μg/ml), benzo(a)pyrene (10 μg/ml), benzo(b)fluoranthene (10 μg/ml), benzo(ghi)perylene (10 μg/ml), benzo(k)fluoranthene (5 μg/ml), chrysene (10 μg/ml), dibenz(a,h)anthracene (10 μg/ml), fluoranthene (10 μg/ml), fluorene (100 μg/ml), indeno(1,2,3-cd)pyrene (10 μg/ml), 1-methylnaphthalene (100 μg/ml), 2-methylnaphthalene (100 μg/ml), naphthalene (100 μg/ml), phenanthrene (100 μg/ml), pyrene (10 μg/ml).

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610 PAH calibration mix A (16 components)

610 PAH calibration mix A (16 components)

Supplier: Restek

610 PAH calibration mix A contains acenaphthene (1000 μg/ml), acenaphthylene (1000 μg/ml),anthracene (1000 μg/ml), benz(a)anthracene (500 μg/ml), benzo(a)pyrene (500 μg/ml), benzo(b)fluoranthene (500 μg/ml)
benzo(k)fluoranthene (500 μg/ml), benzo(ghi)perylene (500 μg/ml), chrysene (500 μg/ml), dibenz(a,h)anthracene (500 μg/ml), fluoranthene (500 μg/ml), fluorene (1000 μg/ml), indeno(1,2,3-cd)pyrene (500 μg/ml), naphthalene (1000 μg/ml), phenanthrene (500 μg/ml), pyrene (500 μg/ml).

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8270 calibration mix #5, revised (18 components)

8270 calibration mix #5, revised (18 components)

Supplier: Restek

Contains: Acenaphthene (83-32-9); Acenaphthylene (208-96-8); Anthracene (120-12-7); Benz(a)anthracene (56-55-3); Benzo(a)pyrene (50-32-8); Benzo(b)fluoranthene (205-99-2); Benzo(ghi)perylene (191-24-2); Benzo(k)fluoranthene (207-08-9); Chrysene (218-01-9); Dibenz(a,h)anthracene (53-70-3); Fluoranthene (206-44-0); Fluorene (86-73-7); Indeno(1,2,3-cd)pyrene (193-39-5); 1-Methylnaphthalene (90-12-0); 2-Methylnaphthalene (91-57-6); Naphthalene (91-20-3); Phenanthrene (85-01-8); Pyrene (129-00-0)

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8270 calibration mix #3 (23 components)

8270 calibration mix #3 (23 components)

Supplier: Restek

Contains: Aramite (140-57-8); Bis(2-chloroethyl)ether (111-44-4); Bis(2-chloroethoxy)methane (111-91-1); 4-Bromophenyl phenyl ether (101-55-3); Chlorobenzilate (510-15-6); 2-Chloronaphthalene (91-58-7); 4-Chlorophenyl phenyl ether (7005-72-3); 1,2-Dichlorobenzene (95-50-1); 1,3-Dichlorobenzene (541-73-1); 1,4-Dichlorobenzene (106-46-7); 1,3-Dinitrobenzene (99-65-0); Hexachlorobenzene (118-74-1); Hexachlorobutadiene (87-68-3); Hexachlorocyclopentadiene (77-47-4); Hexachloroethane (67-72-1); Hexachloropropene (1888-71-7); Isodrin (465-73-6); Kepone (143-50-0); 2,2'-Oxybis(1-chloropropane) (108-60-1); Pentachlorobenzene (608-93-5); Pentachloronitrobenzene (quintozene) (82-68-8); 1,2,4,5-Tetrachlorobenzene (95-94-3); 1,2,4-Trichlorobenzene (120-82-1)

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Calibration mix D2887 (17 components)

Calibration mix D2887 (17 components)

Supplier: Restek

D2887 calibration mix contains compound, conc.; (C6) n-hexane (110-54-3), 6% w/w; (C7) n-heptane (142-82-5), 6% w/w; (C8) n-octane (111-65-9), 8% w/w; (C9) n-nonane (111-84-2), 8% w/w; (C10) n-decane (124-18-5), 12% w/w; (C11) n-undecane (1120-21-4), 12% w/w; (C12) n-dodecane (112-40-3), 12% w/w; (C14) n-tetradecane (629-59-4), 12% w/w; (C16) n-hexadecane (544-76-3), 10% w/w; (C18) n-octadecane (593-45-3), 5% w/w; (C20) n-eicosane (112-95-8), 2% w/w; (c24) n-tetracosane (646-31-1), 2% w/w; (c28) n-octacosane (630-02-4), 1% w/w; (C32) n-dotriacontane (544-85-4), 1% w/w; (C36) n-hexatriacontane (630-06-8), 1% w/w; (C40) n-tetracontane (4181-95-7), 1% w/w; (C44) n-tetratetracontane (7098-22-8), 1% w/w.

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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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Standard for osmometer

Supplier: Advanced Instruments

Calibration standard is used to check the perforance of osmometer and test methods.

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Calibration standards for osmometers

Supplier: GONOTEC

Calibration standard, Osmolality: 300 mOsmol/kg, 10× 1 ml

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