COD Standard, 1000ppm (1mL = 1mg COD) (Potassium A
Labchem COD Standard, 1000ppm (1mL = 1mg COD) (Potassium Acid Phthalate in Water) - LC (Additional S&H or Hazmat charges may apply)
Labchem COD Standard, 1000ppm (1mL = 1mg COD) (Potassium Acid Phthalate in Water) - LC (Additional S&H or Hazmat charges may apply)