COD Calibration Standard

Acetylsalicylic acid-d4 (ring-d4),100 µg/mL,MeOH,1mL,

Abietic acid, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 514-10-3

Aminomethyl phosphonic acid, 100 ng/µl, 1ml