Titrimetric determination of calcium. Features/ Specifications: • Complexometric titration afer precipitation of the magnesium salts. • Type: high sensitive titration kit • Range: 1 syringe is sufficient for the determination of 0.5 – 20 °d or of 0.1 – 3.6 mmol/l Ca2+ (corresponds to 4 – 145 mg/l Ca2+). • Sufficient for: 200 tests with an average calcium hardness of 10 °d or 1.8 mmol/l Ca2+ • Shelf life at least: 2 years • Sea water suitability: yes, after dilution 1:5 and addition of 6 drops Ca-1 • Detectable with PF-11: no • Calcium is widely distributed in nature in rocks and in water. • Water containing calcium and magnesium causes problems in industry as well as in households, since during boiling calcium carbonate is precipitated as detrimental boiler scale and since calcium ions inhibit the foaming of soaps.