High-Purity Standards has proudly served the scientific community for the past twenty years with high quality spectrometric standards and reference materials for AAS, ICP, ICP-MS, GC, GC-MS and IC, and has now expanded their stocked reference materials to include ISO Guide 34 multi-component organic reference materials.
Approximately one-half of High-Purity Standards business is in the preparation of custom blends and difficult to prepare special mixtures. In addition, they have expanded their Organics lab. It's now bigger and better to meet increased demand.
New products of note include expanded spiked filter products in addition to organic reference materials designed to meet EPA testing requirements and additional products from customer requests.
This stock solution is used to prepare working calibration standards and instrument performance check standards. The working calibration solutions are prepared from the stock solutions by making 100-,20- and 10- fold dilutions. The working matrix is 1%HNO3. To prepare an instrument check standard, the stock solution is diluted 40 fold in 1% HNO3.
HPS Matrix Modififers are designed for use with Graphite Furnace Atomic Absorption (GFAAS). A matrix modifier is added to the sample to prevent analyte loss during the ashing step by converting the analyte to a less volatile form.