D-D Solutions Inline TDS Meter

D-D Solutions Inline TDS Meter

The D-D Solutions Inline TDS Meter is a reliable and convenient way to monitor Total Dissolved Solids (TDS) in your aquarium reverse osmosis (RO) water system. Designed for aquarium keepers who require accurate water quality monitoring, this dual inline meter allows you to check the TDS of both your incoming feed water and purified water from the RO unit.

Monitoring TDS is particularly useful when producing purified water for marine and freshwater aquariums. Changes in the TDS reading can indicate when an RO membrane or DI resin is becoming less effective, helping you identify when maintenance or replacement may be required. Lower TDS readings generally indicate purer water, making this meter a valuable tool for maintaining consistent water quality.

The D-D Inline TDS Meter features in and out electrode probes, providing convenient monitoring of two separate water lines. Its advanced microprocessor technology provides accurate readings across a wide measurement range of 0–9990 ppm. Readings from 0–999 ppm are displayed in 1 ppm increments, while higher readings are displayed in 10 ppm increments. The meter has an accuracy of approximately ±2%.

Installation is straightforward thanks to the supplied John Guest Quick-Connect T-fittings, making the meter easy to integrate into many RO water systems. The unit is supplied with two 1.5V button-cell batteries and features an automatic shut-off function after approximately 10 minutes of non-use to help conserve battery life.

Pre-calibrated using a 342 ppm NaCl solution, the meter can also be recalibrated when required.

For reef, marine and freshwater aquarists producing RO water, the D-D Solutions Inline TDS Meter provides a simple and effective way to monitor RO performance and help ensure consistently high-quality purified water.