Instrument Performance Check Standard 1 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 Ag 25ug/mL, Al, As, Ba, Be, B, Cd, Ca, Ce, Cr, Co, Cu, Fe, Pb, Li, Mg, Mn, Hg, Ni, Se, Na, Sr, Tl, V, Zn 200ug/mL each, P, K 1000 ug/mL each, stabilized in 5% v/v nitric acid. 125 mL bottle.