Merck Total Hardness Cell Test, photometric, Spectroquant , 5 - 215 mg/l Ca, 7 - 301 mg/l CaO 12 - 537,mg/l CaCO3, 25 Tests

Total Hardness Cell Test Spectroquant®, 5 - 215 mg/l Ca, 7 - 301 mg/l CaO 12 - 537,mg/l CaCO₃ You can download the safety data sheet here: Safety data sheet