SRM 3158 Thallium (Tl) Standard Solution Lot No. 993012
This Standard Reference Material (SRM) is intended for use as a primary calibration standard for the quantitative determination of thallium.  A unit of SRM 3158 consists of five 10 mL sealed borosilicate glass ampoules of an acidified aqueous solution prepared gravimetrically to contain a known mass fraction of …