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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 re-established conditions will yield optimal working performance. Calibrating with concentrated standards eliminates the possibility that environmental changes will induce instrumental miscalculation when accuracy matters most.
Leitfähigkeitsstandard 10.000 µS/cm (25°C; 0,0765 mol/l; KCl) für die Leitfähigkeitsmessung
Supplier: YSI ENVIRONMENTAL
Leitfähigkeitsstandard 10.000 µS/cm (25°C; 0,0765 mol/l; KCl), Referenztemperatur: 25 °C
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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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Certified reference material, soya-maize oil blend, BCR®
Supplier: LGC Standards PROMOCHEM
A unit contains approximately 5,5 gm soya-maize oil blend in 10 ml amber ampoule.
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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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Reference materials, cloud point reference, VHG
Supplier: LGC Standards PROMOCHEM
These reference materials are intended for use in accordance with ASTM D2500 for the determination of the cloud point of petroleum products. The cloud point of a petroleum product is an index of the lowest temperature of their utility for certain applications.
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Solids Certified Reference Material
Supplier: AccuStandard
Solids certified reference material
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NIST® SRM® Spurenelemente in Wasser
Supplier: Merck
Jede Einheit SRM 1643F besteht aus einer Polyethylenflasche mit ca. 250 ml angesäuertem Wasser, versiegelt in einem aluminiumbeschichteten Plastikbeutel, um die Stabilität zu gewährleisten. Das SRM simuliert die Elementzusammensetzung von Süßwasser. Die Lösung enthält Salpetersäure mit einem Volumenanteil von ~2 %, was einer Stoffkonzentration (Molarität) von fast 0,32 mol/L entspricht.
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NIST® Grüntee in fester oraler Darreichungsform
Supplier: Merck
Anwendung: Das SRM ist in erster Linie für die Validierung analytischer Methoden zur Bestimmung von Catechinen, Xanthinen und toxischen Elementen in festen oralen Darreichungsformen, einschließlich grünem Tee und ähnlichen Matrices, vorgesehen. Darüber hinaus eignet es sich auch zur Qualitätssicherung bei der Wertzuweisung an hauseigene Kontrollmaterialien.
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625 kit
Supplier: Restek
625 kit contains 604 phenols calibration mix: 4-chloro-3-methylphenol (59-50-7), 2-chlorophenol (95-57-8), 2,4-dichlorophenol (120-83-2), 2,4-dimethylphenol (105-67-9), 4,6-dinitro-2-methylphenol (dinitro-o-cresol) (534-52-1), 2,4-dinitrophenol (51-28-5), 2-nitrophenol (88-75-5), 4-nitrophenol (100-02-7), pentachlorophenol (87-86-5), phenol (108-95-2), 2,4,6-trichlorophenol (88-06-2), benzidines calibration mix: benzidine (92-87-5), 3,3'-dichlorobenzidine (91-94-1), 606 phthalate esters calibration mix: bis(2-ethylhexyl)phthalate (117-81-7), benzyl butyl phthalate (85-68-7), di-n-butyl phthalate (84-74-2), diethylphthalate (84-66-2), dimethylphthalate (131-11-3), di-n-octyl phthalate (117-84-0),31032: 607 nitrosamines calibration mix, n-nitrosodimethylamine (62-75-9), n-nitroso-di-n-propylamine (621-64-7), n-nitrosodiphenylamine (86-30-6),31033: 609 nitroaromatics & isophorone calibration mix: 2,4-dinitrotoluene (121-14-2), isophorone (78-59-1), 2,6-dinitrotoluene (606-20-2), nitrobenzene (98-95-3),31011: sv calibration mix #5/610 pah mix: 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(k)fluoranthene (207-08-9), benzo(ghi)perylene (191-24-2), 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), naphthalene (91-20-3), phenanthrene (85-01-8), pyrene (129-00-0),31034: 611 haloethers calibration mix, bis(2-chloroethoxy)methane (111-91-1), bis(2-chloroethyl)ether (111-44-4), 4-bromophenyl phenyl ether (101-55-3), 4-chlorophenyl phenyl ether (7005-72-3), 2,2'-oxybis(1-chloropropane) (108-60-1),31035: 612 chlorinated hydrocarbons calibration mix: 2-chloronaphthalene (91-58-7), 1,2-dichlorobenzene (95-50-1), 1,3-dichlorobenzene (541-73-1), 1,4-dichlorobenzene (106-46-7), hexachlorobenzene (118-74-1), hexachlorobutadiene (87-68-3), hexachlorocyclopentadiene (77-47-4), hexachloroethane (67-72-1), 1,2,4-trichlorobenzene (120-82-1).
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Peptide standard mixture, MassPREP™
Supplier: WATERS
The MassPREP™ peptide standard mixture is useful for the evaluation of HPLC columns and systems dedicated for peptide separations.
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Viscosity standards, general purpose
Supplier: CANNON INSTRUMENT
These certified standards are useful for calibration and verification procedures.
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Silber-Standardlösung, 1.000 mg/L Ag in verd. Salpetersäure-Standard für die AAS und ICP
Supplier: CPI
Silver Standard, 1000 mg/L, Silber, Matrix: Salpetersäure verd., Anwendung: ICP-Standards, AAS-Standards
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Silicone Viscosoty Standards for Rotational Viscometers
Supplier: CANNON INSTRUMENT
CANNON silicone viscosity standards are intended for use with rotational viscometers only.
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Organischer Referenzstandard, Perfluordecansäure 50 µg/ml in Methanol
Supplier: MARKET SOURCE PART PROCESS
Organic Standard, Perfluordecansäure 50 µg/ml in Methanol, Packung: Glass bottle
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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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Organischer Referenzstandard, Natriumheptadecafluoroctan-1-sulfonat 50 µg/ml in Methanol
Supplier: MARKET SOURCE PART PROCESS
Organic Standard, Natriumheptadecafluoroctan-1-sulfonat 50 µg/ml in Methanol