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625 gallons (extended range)
900 gallons across five independent stages
chemical resistance
Continuous Monitoring Capabilities
Hanna (HI3812) Hardness Kit 110 Test W-Case 10 inch x 4.5 inch Big Blue Filters2675 625 gallons (extended range)The Hanna HI3812 Hardness Test Kit delivers laboratory grade EDTA titration testing for calcium and magnesium ions, providing 110 reliable tests across two ranges: 0 30 mg L and 0 300 mg L. Packaged with reagents, buffer solutions, and a durable carrying case, this kit enables precise hardness classification from very soft to very hard water conditions. SPECIFICATIONS Test Kit Performance Test Method EDTA Titration Chemical analysis standard Range
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