
Simply dip one test strip into the hot tub water and wait for 2 seconds. Remove the test strip, hold horizontally for 30 seconds. Compare it to the colour chart on teh bootle lable to determine the range of tested element. With an easy-yo-read, colour coded design, they instantly measure key water parameter, including calcium hardness, chlorine, bromine, pH, and Total Alkalinity.Regular testing helps maintain optimal water balance.
Specifications:
Northern Hot Tub Covers Approved for use with your new hot tub cover when used in accordance with the product instructions.