Spex Certiprep is offering a line of Assurance single and multi-element standards for ICP and AA reference material needs.
Spex Certiprep's Assurance line is manufactured under an ISO 9001:2000 quality control system.
The starting materials and the final solution are checked for impurities in three different ways: classical wet chemistry assay, ICP and ICP-MS.
The Spexertificate of analysis lists actual measured impurities of up to 30 elements in the final solution.
Uncertainty of the major analyte is reported on the Spexertificate for single element standards.
The stability and accuracy of the final solution is listed, not just of the starting materials.
Spex Certiprep offers more than 70 single element standards available in 100, 250 and 500ml volumes.
All standards are directly traceable to NIST standards where applicable.