HM Digital IN-LINE SINGLE TDS METER WITH 1/4" T-FITTINGS

Monitor your RO/DI water quality in real time. This HM Digital online TDS tester installs directly onto your reverse osmosis system to continuously display the purity of the produced water. For reef aquarists, maintaining ultra-pure water (0-5 ppm TDS) is crucial to prevent phosphates, silicates, and contaminants that feed harmful algae and stress corals.

Know exactly when to change your consumables. No more guesswork: the counter tells you precisely when your DI resins are depleted or your RO membrane needs replacing. Save money by replacing only at the right time, not too early or too late.

Simple installation and reliable readings. Supplied with a 1/4" Mur-lok® Quick-Connect T fitting for fast, tool-free installation. Advanced microprocessor technology ensures accurate measurements (±2%) over a wide range of 0-9990 ppm. Automatic shut-off after 10 minutes conserves the two included LR44 batteries (~1000 hours of battery life). Factory calibrated, recalibrable as needed. Compact (7.6 x 2 x 4.7 cm) and lightweight (79.4 g).