0.1N Sodium Thiosulfate, 500mL Prepared and Standardized according to USP specifications 5190-8208 Adjustment shall be made to

Adjustment shall be made to maintain these spiking levels when the weight of sample taken deviates by more than 10% of these values

Oxide - very resistant to all acids including HF (fusion with K2S2O7

Do you always use the same lot of IS for the standards and samples

Ores (lithium carbonate fusion in graphite crucible followed by HCl dissolution - blank levels of Na in lithium carbonate critical)

0.1N Sodium Thiosulfate, 500mL Prepared and Standardized according to USP specifications 5190-8208 Adjustment shall be made toProduct Specifications Part #: 0. 1N NA2S2O3 500ML Description: 0. 1N Sodium Thiosulfate, 500mL Prepared and Standardized according to USP specifications Matrix: Water Every Inorganic Ventures CRM is sold in patented TCT packaging giving your product up to 3 years shelf life. Read more Documentation: TCT Certificate SDS unavailable Associated Certifications: ISO 17034 ISO 17025 Only Inorganic Ventures can give you ALL of these.. Traceable to NIST SRMs