COD Standard, 300ppm (1mL = 0.3mg COD) (Potassium
Labchem COD Standard, 300ppm (1mL = 0.3mg COD) (Potassium Acid Phthalate in Water) - LC (Additional S&H or Hazmat charges may apply)
Labchem COD Standard, 300ppm (1mL = 0.3mg COD) (Potassium Acid Phthalate in Water) - LC (Additional S&H or Hazmat charges may apply)