[Features] ●Water quality can be easily tested with an easy-to-operate simple pack. ●Since it is a small container that fits in the palm of your hand, it is compact and lightweight. ●The reaction is completed in 10 seconds to several minutes after the test water is sucked into the container containing the reagent and shaken. ●No special experience or knowledge is required, as the sample water is sucked in and the colors are compared.