Product Number: 145401
Optimize Operational Efficiency with Easy-to-Use Water Hardness Test Kits
Total hardness is the combined concentration of calcium and magnesium, reported as CaCO₃.The Model 5EP Total Hardness Test Kit (145401) provides a simple, reliable way to measure total water hardness (calcium and magnesium) as CaCO₃ using a proven drop count titration method. Designed for both field and laboratory use, this kit delivers fast, accurate results without the need for instrumentation.
Hach water hardness test kits are trusted by professionals in water treatment, food and beverage, textile, manufacturing, and other industries. Using an EDTA-based titration, each drop of titrant corresponds directly to hardness concentration, allowing users to quickly determine hardness levels in grains per gallon (gpg) or convert to mg/L as CaCO₃.
The Total Hardness Drop Count Titration/EDTA Test Kit, with a range of 20 - 400 mg/L, provides reagents for 100 tests.
Why Test for Total Hardness?
Water hardness, caused primarily by calcium and magnesium ions, can lead to:
• Scale buildup in pipes, boilers, and equipment
• Reduced efficiency of soaps and detergents
• Increased maintenance and operational costs
Routine hardness testing helps optimize water treatment processes, protect equipment, and ensure consistent water quality.
How It Works (Drop Count Titration)
The test uses a color-change titration:
1. Add reagent to the sample (turns red/pink if hardness is present)
2. Add titrant drop-by-drop
3. Count drops until the solution turns blue (endpoint)
4. Number of drops = total hardness (mg as CaCO₃)
Applications
• Drinking water
• Groundwater testing
• Industrial water systems (boilers, cooling towers)
• Food & beverage processing
• Environmental and field water analysis
