API Nitrate test kit API NITRATE TEST KIT for freshwater and seawater API NITRATE TEST KIT measures nitrate levels 0-160 ppm in freshwater or seawater aquariums. High nitrate levels in an aquarium indicate an...

API Reef master test kit API REEF MASTER TEST KIT API REEF MASTER TEST KIT allows you to measure the 4 key parameters - calcium, carbonate hardness, phosphate, and nitrate - to keep reef populations healthy. The tests are...

API KH TEST KIT API KH TEST KIT for freshwater and seawater The API KH TEST KIT tests the carbonate hardness (KH) of water in freshwater or seawater aquariums. It helps to control water quality and prevent unnoticeable water problems that can be harmful to fish...

Ion Director Multi-Reference Highly precise and stabilized reference solution for ION Director calibration and cross-checking. Max. tol. +/ - 1% Ca: 420 mg/l Mg: 1300 mg/l K: 390 mg/l Na: 10700 mg/l NO3 11 mg/l

Ion Director reference B 500ml

Ion Director reference B 1000ml

Ion Director reference A 1000ml

Ion Director reference A 500ml

API Calcium test kit API CALCIUM TEST KIT for Seawater API CALCIUM TEST KIT measures calcium levels down to 20 mg/L to help you keep your reef population healthy. <Calcium is one of the most important elements in a reef aquarium. Invertebrates, such as corals, crustaceans,...

Buffer solution&nbsp;pH 4

KH Reference 1000 ml

Buffer solution conductivity&nbsp;1.41ms