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 ...
The Refractometer is a must have for all hobbyists. The proper salinity is crucial for the survival and health of your fish and corals. This high quality refractometer is extremely accurate and easy to use and calibrate. Calibrat...
Feature(s): Precision of +/- .01 10` coax cable Sealed Ag/AgCI reference. Standard BNC connector
The Captive Purity Refractometer is an incredibly accurate and easy to use device that eliminates the confusion associated with inexpensive hydrometers. Just place a couple of drops of water on the prism and hold to the light. Rea...
The PH-80 is an economically priced, reliable pH meter that is ideal for testing applications such as hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking water and more. Featur...
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...
COM-100: Waterproof EC / TDS / Temp Combo Meter Ideal for all water quality testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools &a...
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
Probe ORP Durable plastic housing Multiple mounting configurations Works with Monitors and Controllers using BNC connections Flexible 2.5 mm diameter 2 Meter Cord BNC Connector with Protective Pin Jacket Pro...
Hanna Instruments Replacement Electrode for DiST 5 Waterproof Low Range EC/TDS/Temperature Tester