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.
Organic reference standard, Chloroethylene 2000 µg/ml in methanol, Supelco®
Supplier: Merck
Organic Standard, Chloroethylene 2,000 µg/ml in methanol, Pack type: Glass bottle for solids
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Spectroquant reference standard for Picco, Move and Multy colorimeters, Supelco®
Supplier: Merck
A reference standard for chlorine, chlorine dioxide and ozone, that is designed to reassure the user about the accuracy and reliability of the results from the Picco and Multy colorimeters.
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Potassium Standard for IC, TraceCERT®, Supelco®
Supplier: Merck
Potassium Standard, 1000 mg/L, TraceCERT®, Supelco®, Potassium, Matrix: H₂O/tr HNO₃, Application: Ion chromatography standards
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Pharmaceutical secondary standard, Pyridoxine hydrochloride, (CRM), Supelco®
Supplier: Merck
Organic Standard, Pyridoxine hydrochloride
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Nonionic surfactants standard solution, 100 mg/L Triton® X-100, Supelco®
Supplier: Merck
Organic Standard, Nonionic Surfactants Standard Solution, 1.00 mg/l Triton® X-100, Supelco®, Pack type: Plastic bottle
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Beryllium standard solution, 1000 mg/L Be in 0,5 M nitric acid (from BeO.(Be(OAc)₂)₃) Certipur® standard for AAS, Supelco®
Supplier: Merck
Beryllium Standard, 1000 mg/L, Certipur®, Supelco®, Beryllium, Matrix: 0,5 M HNO₃, Application: AAS standards
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Arsenic standard solution, concentrate, 1000 mg As in water (from As₂O₅) Titrisol® standard for AAS, Supelco®
Supplier: Merck
Arsenic Standard, 1000 mg/L, Titrisol®, Supelco®, Arsenic, Matrix: H₂O, Application: AAS standards
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Tellurium standard solution, 1000 mg/L Te in 0,5 M nitric acid (from H₆TeO₆) Certipur® standard for AAS, Supelco®
Supplier: Merck
Tellurium Standard, 1000 mg/L, Certipur®, Supelco®, Tellurium, Matrix: 0,5 M HNO₃, Application: AAS standards
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Potassium standard solution, 1000 mg/L K in dilute nitric acid (from KNO₃) Certipur® standard for ICP, Supelco®
Supplier: Merck
Potassium Standard, 1000 mg/L, Certipur®, Supelco®, Potassium, Matrix: 2-3% HNO₃, Application: ICP standards
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Europium standard solution, 1000 mg/L Eu in dilute nitric acid (from Eu?O?) Certipur® standard for ICP, Supelco®
Supplier: Merck
Europium Standard, 1000 mg/L, Certipur®, Supelco®, Europium, Matrix: 2-3% HNO₃, Application: ICP standards
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Ammonium standard solution, 1000 mg/L NH₄ in water (from (NH₄)Cl) TraceCERT® standard for Ion Chromatography, Supelco®
Supplier: Merck
Ammonium Standard, Ammonium Standard for IC TraceCERT®, 1000 mg/L NH4+ in water (nominal concentration), Application: Ion chromatography standards
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Chlorite ion chromatography (IC) standard, Supelco®
Supplier: Merck
Chlorite IC standard may be used in the determination of disinfection by-product, chlorite in water samples using ion chromatography technique (IC)
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Fluoride standard solution, Titrisol®, Supelco®
Supplier: Merck
Fluoride standard solution, 1000 mg/l, Titrisol®, Supelco®, Contents: KF in H₂O, Application: Ion chromatography standards
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Refractive index standards according to Ph. Eur., Supelco®
Supplier: Merck
Several reference materials for use in testing instruments are described in the European pharmacopoeias (e.g. Ph Eur. 2.2.6). In this case, the substances trimethylpentane, toluene and methylnaphthalene are prescribed. This instrument test should be carried out prior to every analysis. The comprehensive product range includes standards suitable for practically every operating range; the range 1,3915 to 1,6160 (20 °C) is covered.
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Iron standard solution, 1000 mg/L Fe in dil. nitric acid (from Fe(NO₃)₃) Certipur® standard for ICP, Supelco®
Supplier: Merck
Iron Standard, 1000 mg/L, Certipur®, Supelco®, Iron, Matrix: Nitric acid dil., Application: ICP standards
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Catalog #: 20864.320
: VWR Chemicals
Catalog #: 83640.320
: VWR Chemicals
Catalog #: 31770.294
: VWR Chemicals
Catalog #: 1.00030.2500
: Merck
Catalog #: 83645.320
: VWR Chemicals