" The Original Ottawa Silica, " U.S. Silica' s testing sands are appropriate for hydraulic and masonry testing ( C-109) . They are available in graded and 20-30 grades, both conforming to ASTM C-778.
NIST CRMs are used for traceability information when they are available for the particular CRM testing. Classical " wet" methods of chemical analysis are used in addition to plasma and atomic....
This FO series represent standard type of muffle furnaces which use a microprocessor controlled thermoregulator and which are capable of heat processing characterized by excellent repeat ability. ....