Water Hardness Indicator, 1% (w/v) Eriochrome Black T in 20% (v/v) Triethanolamine / 80% (v/v) Isopropyl Alcohol, Ricca - WATER HARDNESS INDICATOR 120ML [RC9301-4-EA]
Colonial Scientific has teamed up with the industry leaders, Fisher Scientific and VWR, and now offers their entire product line. Colonial Scientific provides any part from the Fisher Scientific site with a part number.