API Freshwater Master Test Kit is a API-branded product in the ownkoi catalog. Comprehensive freshwater liquid reagent test kit from API, also widely used in ornamental ponds. Includes pH, high-range pH, ammonia, nitrite, and nitrate reagents with glass test tubes. Specifications and pricing reflect the manufacturer-published or retailer-published data at the most recent catalog refresh. Verify the live listing on the source retailer page before purchase.