표준 물질

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.

524 Results

Sort by

VWR®, Potassium standard solution, 1,000 mg/L K in dilute nitric acid AVS TITRINORM standard for AAS

Supplier: VWR Chemicals

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

Expand 2 Items

VWR®, Alternate Metals II, 4 components: Ca 500 mg/l, Na 500 mg/l, K 100 mg/l, Mg 100 mg/l in 2% HNO₃

Supplier: VWR Chemicals

Multi-Element Standard, Alternate Metals II (4 components), VWR®, Ca 500 mg/l, Na 500 mg/l, K 100 mg/l, Mg 100 mg/l, Matrix: 2% HNO₃, Application: ICP standards

Expand 1 Items

VWR®, Iodate 1,000 mg/L in water standard for ion chromatography

Supplier: VWR Chemicals

Iodate standard solution, 1000 mg/l, VWR®, Contents: KIO₃ in H₂O, Application: Ion chromatography standards

Expand 1 Items

VWR®, Standard solution (1000 ppm NO₃) for the preparation of nitrate standard solution (100 ppm NO₃) Reag. Ph. Eur.; 5002100

Supplier: VWR Chemicals

Nitrate standard solution, 1000 mg/l, VWR®, Contents: KNO₃ in H₂O, Application: Ion chromatography standards

Expand 1 Items

VWR®, Boron standard solution, 5000 mg/L B in water

Supplier: VWR Chemicals

This certified reference material is produced using a high-purity starting material, acid from sub-boiling and 18 MOhm deionised water.

Expand 1 Items

VWR®, Chlorate 1,000 mg/L in Water standard for ion chromatography

Supplier: VWR Chemicals

Chlorate standard solution, 1000 mg/l, VWR®, Contents: NaClO₃ in H₂O, Application: Ion chromatography standards

Expand 1 Items

VWR®, Sulphate 1000 mg/L in water standard for ion chromatography

Supplier: VWR Chemicals

Sulphate standard solution, 1000 mg/l, VWR®, Contents: Na₂SO₄ in H₂O, Application: Ion chromatography standards

Expand 2 Items

VWR® AVS TITRINORM, Iron Standard Solution, 1000 mg/L Fe in 2% Hydrochloric Acid AVS TITRINORM Standard for AAS

Supplier: VWR Chemicals

Iron Standard, 1000 mg/L, VWR® AVS TITRINORM, Iron, Matrix: 2% HCl, Application: AAS standards

Expand 2 Items

VWR®, Standard solution (250 ppm NH₄) for the preparation of Ammonium standard solution (2.5 ppm NH₄) Reag.Ph.Eur.; 5000301

Supplier: VWR Chemicals

Ammonium Standard, Ammonium standard solution, 250 mg/L, VWR®, Matrix: H₂O

Expand 1 Items

VWR® AVS TITRINORM, Lanthanum Standard Solution, 1000 mg/L La in dil. Nitric Acid AVS TITRINORM Standard for AAS

Supplier: VWR Chemicals

Lanthanum Standard, 1000 mg/L, VWR® AVS TITRINORM, Lanthanum, Matrix: Nitric acid dil., Application: AAS standards

Expand 2 Items

VWR®, Perchlorate 1,000 mg/l in Water standard for ion chromatography

Supplier: VWR Chemicals

Perchlorate 1,000 mg/l in water standard for ion chromatography, 1000 mg/l, VWR®, Contents: KClO₄ in H₂O, Application: Ion chromatography standards

Expand 1 Items

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%.

Expand 2 Items

VWR®, Certified Reference Material, Cleveland Open Cup flash point

Supplier: VWR Chemicals

Flash point Certified Reference Materials are for the verification of laboratory flash point instruments that are used in testing petroleum and derivative products. COC flash point standards are tested and certified in accordance with ASTM D92 'Standard Test Method for Flash and Fire Points by Cleveland Open Cup Tester.'

Expand 4 Items

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

Expand 2 Items

VWR®, Certified Reference Materials for the standardisation of volumetric solutions

Supplier: VWR Chemicals

CRM's - secondary reference materials intended for standardisation of volumetric solutions in accordance with the Pharmacopoeia (Ph. Eur. and USP). These volumetric standards are prepared from high purity salts. Certified mass fraction is determined by classical analysis according to ISO/IEC 17025. Homogeneity and stability studies have been performed according to the requirements of ISO 17034 and ISO Guide 35. All volumetric standards are traceable to SI (NIST or BAM).

Expand 11 Items

VWR®, Melting point standards

Supplier: VWR Chemicals

These standards can be used with any melting point apparatus and are prepared using pure raw materials. Melting points are determined using a high accuracy Differential Scanning Calorimeter (DSC) system that is calibrated to the ITS 90 International Temperature Scale.