Total Hardness Test Strip 0 - 1000 ppm Pack of 50

Pack of 50 total hardness test strips for water quality testing. A low cost solution, which are calibrated to be both accurate and sensitive, making them a great value and ideal solution for service work and a variety of other applications.

• Detection range (ppm): 0, 40, 80, 120, 180, 250, 425, 1000ppm (mg/L)
• Detection range (gpg): 0, 2, 5, 7, 11, 15, 25, 58 gpg