Reference Material ASTM 5010A, 1ml

Interference Standard 1

1,5-Bis-(1-methylethyl)-biguanide HCl, 100µg base/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 45095-69-0

4-Nitrophenol, 10.0 µg/ml, Acetonitrile, 10ml