標準

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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ガードナー色彩標準

Supplier: VWR Chemicals

Ready to use colour solutions that are prepared gravimetrically on a weight/weight basis that are designed for grading the colour of similarly coloured liquids, such as resins, varnishes, lacquers, drying oils, fatty acids, lecithin's, sunflower and linseed oil.

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VWR®, Residual solvent standards according to ICH guidelines

Supplier: VWR Chemicals

The level of volatile organic solvents in pharmaceutical raw materials or finished product is defined and monitored in accordance with ICH guidelines. Residual solvents are classified according to their risk assessment classes. A selection of residual solvent standards is now available from Avantor.

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VWR® ARISTAR®, Boron Standard Solution, 10000 mg/L B in Ammonium Hydroxide Solution (max. 1%) (from B(OH₃)), Standard for ICP

Supplier: VWR Chemicals

H₃BO₃ in H₂O tr. NH₄OH.

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VWR®, Silicon standard solution, 10000 mg/L Si in water with hydrofluoric acid (max. 1%) (from (NH4)2SiF6) ARISTAR® standard for ICP

VWR®, Silicon standard solution, 10000 mg/L Si in water with hydrofluoric acid (max. 1%) (from (NH₄)₂SiF₆) ARISTAR® standard for ICP

Supplier: VWR Chemicals

(NH₄)₂ SiF₆ in H₂O tr. HF.

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VWR® ARISTAR®, Niobium Standard Solution, 1000 mg/L Nb in Water with Hydrofluoric Acid (max. 1%) (from Nb₂O₅), Standard for ICP

Supplier: VWR Chemicals

Nb₂O₅ in H₂O tr. HF.

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VWR® ARISTAR®, Gadolinium Standard Solution, 1000 mg/L Gd in dilute Nitric Acid (de Gd2O3), Standard for ICP

VWR® ARISTAR®, Gadolinium Standard Solution, 1000 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® ARISTAR®, Palladium Standard Solution, 1000 mg/l Pd in 10% Hydrochloric Acid (from Pd), Standard for ICP

Supplier: VWR Chemicals

Pd in HCl 10%.

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ARISTAR®VWR® , Manganese Standard Solution, 1000 mg/L Mn in dil. Nitric Acid (from Mn(OAc)₂), Standard for ICP

Supplier: VWR Chemicals

Mn(C₂H₃O₂)₂ in HNO₃ 2 to 5%.

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COD校正用標準液

Supplier: VWR Chemicals

These standards are ideal to use as control standards for COD measurements to verify that correct analysis for COD has taken place.

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

Supplier: VWR Chemicals

Tl in HNO₃ 2 to 5%.

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VWR® ARISTAR®, Tin Standard Solution, 1000 mg/L Sn in dil. Nitric Acid with Hydrofluoric Acid (max. 1%) (from Sn), Standard for ICP

Supplier: VWR Chemicals

Sn in HNO₃ tr. HF.

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$VWR®, Sucrose (Brix) standards, stabilised solutions for refractometry$

VWR®, Sucrose (Brix) standards, stabilised solutions for refractometry

Supplier: VWR Chemicals

A range of Brix/refractive index standards for ease of use when calibrating all types of refractometers.

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酸化還元（ORP）標準

Supplier: VWR Chemicals

Avantor offers a wide range of REDOX (ORP) standards, which are produced from high quality reagents.These reference materials can be used as control standards to check the functionality of both the elextrodes and the measuring instruments. The values are temperature dependent, so it is important to control the environment of the measurement. A table of temperatue and corresponding Redox value is available on both the label and the batch specific certificate.

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VWR®, Low Temperature viscosity standards

Supplier: VWR Chemicals

Low Temperature viscosity standards have certified data for kinematic viscosity, dynamic viscosity and density for various low temperatures.

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全塩基価（TBN）標準試料

Supplier: VWR Chemicals

Total Base Number (TBN) standards are specifically manufactured for the verification of analytical instruments used to determine base number by potentiometric titration. Each standard is certified in strict accordance with international test method protocols, ASTM D2896 / IP 276.