Features:<br> 1.6 in 1 Pool and Spa water quality test strips.<br> 2.Tests for Free Chlorine, Bromine, PH, total Alkalinity, total Hardness and Cyanuric acid.<br> 3.Test at both ends of pool twice a week for best results.<br> 4.Easy to distinguish. Color difference is obvious, easier to compare the strip color to the color chart.<br> 5.Dip in water for instant reading and comes in easy-to-store container.<br> 6.Perfect for swimming pool and spa test.<br> Descriptions:<br> 1.This strip is a good way to easy understand your water quality in main six indicator(TC, CL, PH, ALK, CYA, TH).<br> Specifications:<br> Type: Swimming Pool SPA Test Strips<br> Material: Paper<br> Color: White<br> Test: TC, CL, PH, ALK, CYA, TH<br> Quantity: 50 pcs/bottle<br> Test Range:<br> Total Chlorine Test Range: 0~10ppm<br> Free Chlorine Test Range: 0~10ppm<br> PH Test Range: 6.8~8.4<br> Total Alkalinity Test Range: 0~240ppm<br> Total Hardness Test Range: 0~1000<br> Cyanuric Acid Test Range: 0~240<br> Package Informations:<br> Package Size: 100x40x40mm/3.9x1.56x1.56in<br> Plastic Box Package<br> Package Included:<br> 1 x Swimming Pool SPA Test Strips(50pcs/bottle)