You searched for: Standards

Supplier: VWR Chemicals

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

Supplier: VWR Chemicals

Due to its excellent separation capacity and its high sensitivity gas chromatography is a widely used technique for analytical purposes. In order to get proper identification and quantification results of the analysed compounds, reference standards are needed. These PESTINORM® reference substances can be used for the characterisation of GC column properties. In addition they may also be used for the identification of unknown compounds in a gas chromatogram or as standards in quantitative GC analysis.

Supplier: VWR Chemicals

22 elements 10 mg/L: As, Ba, Be, Cd, Co, Cr, Cu, Fe, Al, Mn, Mo, Ni, Pb, Sb, Se, Sn, Ti, Tl, V, U, Te, Zn.

Supplier: VWR Chemicals

7 components: Fluorides (F-) 2ppm, Phosphates (PO43-) 10ppm, Nitrites (NO2-) 5ppm, Nitrates (NO3-) 10ppm, Bromides (Br-) 10ppm, Chlorides (Cl-) 5ppm, Sulphates (SO42-) 10ppm in H₂O

Supplier: VWR Chemicals

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

Supplier: VWR Chemicals

33 elements 100 mg/L: Al, Ag, As, B, Ba, Be, Bi, Ca, Cd, Cs, Co, Cr, Cu, Fe, In, K, Li, Mg, Mn, Mo, Na, Ni, Nb, Pb, Rb, Sb, Se, Sr, Ti, Tl, V, U, Zn.

Supplier: VWR Chemicals

12 elements at 10 mg/L: Hf, Ge, Mo, Nb, Sb, Si, Sn, Ta, Te, Ti, W, Zr

Supplier: VWR Chemicals

Residual solvents according to Chinese Pharmacopoeia.

Supplier: VWR Chemicals

The tightening of regulatory requirements and the increasing demands of QA/QC methodology is becoming more important across all market sectors. The demand for standards to support testing methods continues to increase, and this growth applies to water determination according to Karl Fischer. Avantor now offers a complete range of Karl Fischer water standards as CRMs to calibrate and monitor equipment and check test results.

Supplier: VWR Chemicals

28 elements 100 mg/L: Al, Ag, As, B, Ba, Be, Bi, Ca, Cd, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Mo, Na, Ni, Pb, Sb, Se, Sr, Ti, Tl, V, Zn.

Supplier: VWR Chemicals

Ready to use colour solutions that are prepared gravimetrically on a weight/weight basis and are designed to measure the visual colour of water supplies.

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

Supplier: VWR Chemicals

ICP multi-element solution according to USP 232 dietary supplements.

Supplier: VWR Chemicals

Per- and polyfluoroalkyl substances (PFAS) are amongst the primary emerging contaminants of concern. The detection and quantification of known PFAS and the discovery of unknown PFAS substances has never been more important.

Supplier: VWR Chemicals

Eight elements in 7% nitric acid.

Supplier: VWR Chemicals

This certified reference material is produced using a high purity starting material, acid from sub-boiling and 18 MOhm deionized water and filtered through a 0.2 micron filter.

Supplier: VWR Chemicals

Two solutions - a nitrite standard solution and a 6 component multi-element standard solution.

Supplier: VWR Chemicals

Two solutions - a nitrite standard solution and also a 6 component multi-element standard solution.

Supplier: VWR Chemicals

28 elements 1 mg/L: Al, Ag, As, B, Ba, Be, Bi, Ca, Cd, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Mo, Na, Ni, Pb, Sb, Se, Sr, Ti, Tl, V, Zn.

Supplier: VWR Chemicals

Chlordane (0,02 mg/ml) and Toxaphene (0,20 mg/ml) in methanol.

Supplier: VWR Chemicals

Flash point Certified Reference Material for the calibration and verification of laboratory instruments used in testing petroleum and derivative products for TAG Closed Cup (ASTM D56).

Supplier: VWR Chemicals

The viscosity values for certified viscosity check oils have been tested and certified at typical blend targets. These check oils are for validating the performance of cold cranking simulator and kinematic viscometers by measuring commercially available formulated engine oils.

Supplier: VWR Chemicals

Flash point Certified Reference Material for the calibration and verification of laboratory instruments used in testing petroleum and derivative products for Abel Closed Cup (IP 170, ISO 13736).

Supplier: VWR Chemicals

This range of relative density standards are certified in accordance with primary level ASTM D1480 methodology, and are dual-certified to ISO 17025 / ISO 17034 under UKAS accreditation. Relative Density standards are designed for the calibration or verification of instruments used to measure density and relative density of materials at the desired test temperature within the range of 15 to 25 °C.

Supplier: VWR Chemicals

A set for linearity check of the absorbance of spectrophotometers.

Supplier: VWR Chemicals

(12 Elements nitric acid 1% solution)

Supplier: VWR Chemicals

11 Elements in 2% nitric acid solution.

Supplier: VWR Chemicals

8 Components in 2% HNO₃.

Supplier: VWR Chemicals

ICP solution of eight elements in 7% nitric acid.

Supplier: VWR Chemicals

13 Components in 2% HNO₃.