Easier to use and more accurate than chemical test kits EPA approved DPD method Accuracy ±0.03 ppm (mg/L) ±3% of reading 0.01 ppm (mg/L) resolution (250 points) Large, easy to read digits Auto shut-off. Dedicated to a single ...
Specifically designed for aquarium use for measuring the salinity of Natural Sea Water. Almost all hand held salt water refractometers available to the hobby are designed and calibrated for testing of brine solution, i.e. sodium c...
The Socket Expansion box is a small power strip with controllable 2 outlets used to reduce the power load on a direct connect (DC) box. Since power is supplied from a different circuit, the Direct Connect box`s power budget is not...
Spare electrode for HI 98121, HI 98127, HI 98128, HI 98129 and HI 98130
EC/TDS/Temp Water Resistant Hydrotester The COM-80 is an economically priced, reliable EC/TDS meter that is ideal for testing applications such as hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, d...
Spare pH electrode, with Teflon ® junction, 2 m (6.6') cable, for general purpose, water treatment and agriculture.
Expansion Socket The Digital Aquatics Expansion Socket allows you to control high current devices without affecting your ReefKeeper power budget
Hanna Instruments Replacement Electrode for DiST 5 Waterproof Low Range EC/TDS/Temperature Tester