Sofchek Hach 611213 Swimming Pool Spa Total Hardness Test Kit Strips

50 Strips/Bottle Tests for: Total Hardness Dip a SofChek test strip in your pool or spa water for one second and remove. You will get test results in seconds. For a clean and healthy pool, test the water at each end a minimum of twice a week. AquaChek offers a full line of test strip products to help keep your pool and spa water clean and healthy. Check out our user-friendly products so you can enjoy the results.Takes about 15-30 seconds to show results A must for a swimming pool or spa owners.Test for: - Total Hardness