Interference 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 Si 230ug/mL, Mo300 ug/mL, B500 ug/mL, Ti 1000ug/mL stabilized in 2% v/v nitric acid/0.3-0.9% hydrofluoric acid. 125 mL bottle.