Calibration 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 Ce, Co, V 200ug/mL each, P 1000ug/mL, V 200 ug/mL, stabilized in 5% v/v nitric acid. 125 mL bottle.