For laboratory, research,or manufacturing use. Comes in a 64 ounce narrow mouth Polyethylene bottle. Appearance: Passes Test Identification: Passes Test pH at 25°C at 26x Dilution: 6.75 - 6.85 Assay (M) at 26X Dilution (as Sodium Phosphate Monobasic): 0.045 - 0.055 …