About This Item Testing your spa water has never been easier. HTH Spa Test Strips test for total bromine, free chlorine, alkalinity, pH and total hardness levels and give you results in seconds so you can adjust your chemicals as needed and keep your spa water sparkling and balanced. HTH Spa Test Strips are great for bromine and chlorine systems. How To Use HTH Spa Test Strips Test and balance your water two times every week to keep your spa water beautifully clean, clear and healthy. Just dip your test strip in the spa water and see results on the color strip in seconds. Compare it to the diagram on the back of the test strip package and adjust chemicals as needed. About HTH Spa For generations, HTH has been leading the way in smart spa care. We do the chemistry so you can just take it easy. From the very first day you open your spa, HTH is here to help maintain and problem solve. Our complete range of simple-to-use, no-nonsense products empower you to balance, sanitize and treat your spa-it's everything you need and nothing you don't. There is nothing more relaxing than taking it easy in sparkling, clean water. With HTH, your spa is always ready when you are.