[Application]Hot tub test strips suitable for drinking water, aquariums, swimming pools and spas, sewage and other liquids. It can also be used to test hot tub water, it will work normally. [Easy to use]It is also very simple for first-time users, just take a piece of test paper and immerse it in water for about 2 seconds, remove it and put it flat, and compare the reading with the color card after 15 seconds. [Upgrade 6 IN 1]The dip test strips 100 are newly upgraded, with 6 in 1, which can simultaneously test six kinds of PH, total chlorine, free chlorine, total alkalinity, cyanuric acid, and total hardness. More effective than other spa test strips. [High Quality ]The pool test strips 100 count are made of high quality imported filter paper.Each test strips with 6 colors indicators, high accurate and reliable instant reading. [Easy to store]Ph test strips were packed in a easy-to-store container to ensure long-term storage. Product Description Product Description .aplus-v2 { display:block; margin-left:auto; margin-right:auto; word-wrap: break-word; overflow-wrap: break-word;