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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 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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J.T.Baker® BAKER INSTRA-ANALYZED®, Copper Standard Solution, 1000 µg/l Cu, Reagent for AAS

Supplier: Avantor

Copper standard solution for AAS are prepared from metals and salts of 99,999% spectral purity.

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VWR® ARISTAR®, Calcium Standard Solution, 1,000 mg/L Ca in dil. Nitric Acid (from CaCO₃), Standard for ICP

Supplier: VWR Chemicals

CaCO₃ in HNO₃ 2 to 5%.

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VWR® ARISTAR®, Aluminium Standard Solutions for ICP

Supplier: VWR Chemicals

Al(NO₃)₃^.9H₂O in HNO₃ 2 to 5%.

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VWR® ARISTAR®, Barium Standard Solution, 10000 mg/L Ba in dil. Nitric Acid (from Ba(NO₃)₂), Standard for ICP

Supplier: VWR Chemicals

Ba(NO₃)₂ in HNO₃ 2 to 5%.

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VWR® ARISTAR®, Silver Standard Solution, 10000 mg/L Ag in dil. Nitric Acid (from AgNO₃), Standard for ICP

Supplier: VWR Chemicals

AgNO₃ in HNO₃ 2 to 5%.

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VWR® Traceable® One-Shot™, Conductivity standards (CRM)

Supplier: VWR Collection

Traceable® Conductivity Standards are among the most accurate available. They are compatible with all makes of equipment, and can be used in lab or field. Each bottle is labeled for calibrating conductivity (microsiemens/micromhos), resistivity (ohms), and dissolved solids (parts per million).

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VWR®, Cloud Point standard, Certified Reference Material

Supplier: VWR Chemicals

Cloud Point Certified Reference Materials are for the verification of laboratory instruments used in testing petroleum and derivative products for Cloud Point according to IP 219, ISO 3015, EN 23015, ASTM D2500 and other equivalent test methodology.

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VWR®, Organic reference standard, Chloroethylene 200 µg/ml in methanol

Supplier: VWR Chemicals

Organic Standard, Chloroethylene 200 µg/ml in methanol, 포장 유형: Glass ampoule

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VWR® PESTINORM®, Cyclohexane, Secondary Reference Standard for GC

Supplier: VWR Chemicals

A secondary GC solvent reference standard for various chromatographic and analytical applications.

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VWR®, Nickel standard solution, 1000 mg/L Ni in dil. nitric acid AVS TITRINORM standard for AAS

Supplier: VWR Chemicals

Nickel Standard, 1000 mg/L, VWR®, Nickel, Matrix: 2% HNO₃, Application: AAS standards

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VWR®, Gadolinium Standard Solution, 10000 mg/L Gd in dilute Nitric Acid (de Gd2O3), Standard for ICP

VWR®, Gadolinium Standard Solution, 10000 mg/L Gd in dilute Nitric Acid (de Gd₂O₃), Standard for ICP

Supplier: VWR Chemicals

Gd₂O₃ in HNO₃ 2 to 5%.

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VWR®, Organic reference standard, Benzo[a]pyrene 50 µg/ml in toluene

Supplier: VWR Chemicals

Organic Standard, Benzo[a]pyrene 50 µg/ml in toluene, 포장 유형: Glass ampoule

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VWR® ARISTAR®, Chloride Standard Solution, 200 mg/L Cl- in Water (from NaCl) Standard for Ion Chromatography

Supplier: VWR Chemicals

(Cl in H₂O).

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VWR®, Polysulphide, Certified Reference Materials, in light, mineral oil

Supplier: VWR Chemicals

Polysulphide CRMs are suitable for calibration, verification, or for use in quality control procedures used for analysing sulphur content in petroleum products.