Hanna Marine Salinity Tester - HI98319 a fail-safe mechanism that stops

a fail-safe mechanism that stops the pump if it is operating for too long

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An easy to use and accurate kit used to measure Carbonate hardness (KH)

the new EHEIM compactON is characterized by its extremely compact dimensions

Hanna Marine Salinity Tester - HI98319 a fail-safe mechanism that stopsHanna Instruments HI98319 is a salinity tester made specifically for the saltwater aquarium enthusiest and can measure salinity up to 70. 00 ppt. The rugged waterproof tester is only 0. 7" thick and extremely ergonomic, fitting comfortably in your hand. The HI98319 keeps things simple with a two button operation; one for ON OFF, the other for calibration. The salinity tester features a large multi level LCD which displays either ppt, PSU or specific