Exaxol Nitrogen Standard, 1,000ppm (Source NH3)

Ammonia-Nitrogen Standard 1,000 ppm by Exaxol, catalog numbers N5420-100 and N5420-500, is an aqueous ammonia-nitrogen standard at 1,000 ppm as N, used to prepare calibration and check standards. Available in 100 mL and 500 mL from MBP, a registered vendor to many research institutes across the USA.