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.
VWR® ARISTAR®, Rhodium Standard Solutions for ICP-MS
Supplier: VWR Chemicals
Rhodium Standard, 1000 ppm, VWR® ARISTAR®, Rhodium, Matrix: 10% HCl, Application: ICP-MS standards
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ARISTAR®VWR® , Potassium Standard Solution, 200 mg/L K in dilute Nitric Acid (from K), Standard for Ion Chromatography
Supplier: VWR Chemicals
K in H₂O tr.HNO₃.
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VWR®, Praseodymium standard solution, 10000 mg/L Pr in dil. nitric acid (from Pr6O11) ARISTAR® standard for ICP
Supplier: VWR Chemicals
Pr₆O₁₁ in HNO₃ 2 to 5%.
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VWR®, Density Standards, Certified Reference Materials, Referenced at 25 °C
Supplier: VWR Chemicals
VWR® ISO 17025 / ISO 17034 dual certified density standards are for the verification of instruments used to measure density of materials which are fluid at the desired test temperature.
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VWR®, Tuning solution 1 in dil. nitric acid ARISTAR® for ICP-MS
Supplier: VWR Chemicals
8 Components in 2% HNO₃.
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VWR®, UV/Visible spectroscopy stray light standards
Supplier: VWR Chemicals
Stray light standards packed in permanently sealed UV cuvettes or 100 ml amber bottle.
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VWR® AVS TITRINORM, Gold Standard Solution, 1000 mg/L Au in 2% Hydrochloric Acid AVS TITRINORM Standard for AAS
Supplier: VWR Chemicals
Gold Standard, 1000 mg/L, VWR® AVS TITRINORM, Gold, Matrix: 2% HCl, Application: AAS standards
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VWR® ARISTAR®, Phosphorus Standard Solution, 1000 mg/L P in Water (from (NH₄)PO₄H₂), Standard for ICP
Supplier: VWR Chemicals
NH₄H₂PO₄ in H₂O.
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VWR® ARISTAR®, Sulphur Standard Solution, 10000 mg/l S in Water (from (NH₄)₂SO₄), Standard for ICP
Supplier: VWR Chemicals
(NH₄)₂SO₄ in H₂O.
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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.
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VWR® ARISTAR®, Thallium Standard Solution, 1000 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®, 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®, 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).
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VWR®, Standard solution (1000 ppm Ca) for the preparation of calcium standard solution (100 ppm Ca), alcoholic Reag. Ph. Eur., 5000802
Supplier: VWR Chemicals
Calcium Standard, 1000 mg/L, VWR®, Calcium
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VWR®, UV/Visible standards
Supplier: VWR Chemicals
For spectrophotometer calibration according to European Pharmacopoeia (Ph. Eur.)
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VWR® ARISTAR®, Multi-Element Quality Control Standard, 100 mg/L for 32 Elements in 5% Nitric Acid, for ICP
Supplier: VWR Chemicals
Multi-Element Standard, Multi-element quality control standard 100 mg/L {Ag; Al; Ba; Bi; Ca; Cd; Co; Cr; Cu; Fe; Ga; Ge; In; K; Li; Mg; Mn; Mo; Na; Nb; Ni; P; Pb; Re; Sb; Si; Sn; Ta; Ti; V; W; Zn} in nitric acid 5% ARISTAR® for ICP, VWR® ARISTAR®, Application: ICP standards