Interference Check Standard 3 for EPA 200.7 is a certified reference material traceable to NIST and manufactured in accordance with stringent quality assurance guidelines. One year expiration date. COA and MSDS are included.
Contains Be 100ug/mL, Mn 200ug/mL, Ba, Cd, Cr, Co, Cu, Ni, Ag, V, Zn 300 ug/mL each, Se 500ug/mL, As, Pb, Tl 1000 ug/mL each, K 20000 ug/mL, stabilized in 7% v/v nitric acid. 125 mL bottle.