Buffer for hardness and chelant determination by titration, pH 10.1 ± 0.1 at 20°C. Hach methods 8213 and 8226. Also used in Hach Phenols method 8047. 100 mL Marked Dropping Bottle REF: 83299 Industry: Aquaculture, Chemical, Clinical/Medical Lab, Drinking Water, Fertigation, Food & Beverage, Oil & Gas, Petroleum, Storm Water, Waste Water, Hospitality, Agriculture