💡 Test the Waters: Know Your Hardness Levels! Comes with reagents for up to 100 tests—ready to go! Utilizes drop count titration for accurate results. Offers precise increments of 1 gpg for detailed analysis. Designed for professionals and enthusiasts alike. Easily measures hardness from 1 to 30 gpg. Drop Count Titration Range: 1-30 gpg 100 Tests Included The HACH145300 Total Hardness Test Kit is a professional-grade solution for measuring water hardness using the drop count titration method. With a range of 1 to 30 gpg and 1 gpg increments, this kit includes reagents for 100 tests, making it perfect for both routine checks and in-depth analysis.