Pool and Spa Test Strips for Hot Tubs, 7 IN 1 Swimming Pool&Spa Water Chemistry Testing Kit PH, Nitrite,Total Chlorine, Free Chlorine,Total Alkalinity, Nitrate, Hardness Testing 100 Count(1 Pack)

Features

• UPGRADE 7 IN 1: Test PH, Nitrite,Total Chlorine, Free Chlorine, Total Alkalinity, Nitrate, Hardness at the same time, more functional than 5-way or 4-way pool test strips and liquid test kit
• 17S TESTING: Submerge pool test strip under water for 2s, Hold it still in the air for about 15s, then match up the colors of the strip to the back of the bottle to get your readings, only take 17s. Pool test strips are easy to use even for beginners
• EASY TO CARRY & WARRANTY: Size 3.9 x 1.6 inch, weight 1.1oz, it is very convenience to take to anywhere. 60 Days 100% Return and One Year Warranty, if there are any problems, please contact us, AONOKOY will try our best to make you satisfied again
• NOTE: After removing the test paper, you need to quickly close the lid. The optimal colorimetric time is 60s, and too long or short time affects the reading.
• OUR ADVANTAGE: Our dipping test have VC interference resistance to make the measured value more stable.