6 IN 1 HOT TUB TEST STRIPS With these test strips you can test 6 indicators once: pH value, total chlorine, free chlorine, total alkalinity, cyanuric acid, total hardness. More practical and convenient than 5-way or 4-way pool test strips and liquid test sets. QUICK AND EASY TO USE You can get the test result easily and quickly: just dip the test strip in water and stay for 2 seconds. Then take it out and lay it flat for 15 seconds. Finally, read your results by matching the strip colors and the color chart on the bottle. Handy for beginners. PH TEST STRIPS KIT Package includes 2 bottles, and each bottle contains 5 aluminum foil pouches (10 pieces of test strips for each pouch), 100pcs test strips in total. Well packaged and sufficient for long-term use. It is recommended that the pool water quality be tested weekly. POOL TEST STRIPSThese test strips can be used to test any water source in your home including Drinking Water / Fountain / Tap Water, Pool & Spa, Hot Tub, and Aquarium. HIGH PRICE-PERFORMANCE RATIO100pcs test strips mean that the water can be tested for 100 times. This test strip kit provides an affordable option for effective water testing at low cost and very good value for money..Items from Sheng Xinshun's shop