Certified traceable to NIST for regulatory compliance
وصف
Ricca Chemical Company 5455-16 Nitrogen Standard, 1000 ppm Nitrogen (1216 ppm Ammonia), 500 mL is intended for use in Nitrogen (Ammonia) determination in laboratory applications. The certified concentration of Nitrogen Standard, 1000 ppm Nitrogen (1216 ppm Ammonia) 1000 plus-or-minus 5 ppm Nitrogen at 20 degrees Celsius. This solution is lot numbered and expiration dated.