· Compatible with FROG @ease Systems: FROG @ease Test Strips are only compatible with FROG @ease sanitizing systems; works for both hot tubs and swim spas· Unique SmartChlor Test Kit: FROG @ease Test Strips are specially designed to test for SmartChlor and are much easier to use than other test strips; one color match shows when the FROG @ease SmartChlor Cartridge needs to be replaced· Test Strips for Home Spa: In seconds, you can know whether your Total Alkalinity, pH, and Total Hardness are within ideal guidelines; dip the test strip, remove, and hold it next to the color chart· Essential FROG @ease Test Kit: Each bottle contains 30 test strips; recommended to test at least once per week to ensure water is properly balanced· Water Care Expertise: FROG has more than 25 years of experience making water care easier & keeping pool, hot tub and swim spa water sanitized; FROG’s patented Mineral Technology and prefilled cartridges create cleaner, clearer, softer water that’s no mess, no guess and no stress