Digital. Simple. Compact.

The Milwaukee T75 Waterproof Total Dissolved Solids (TDS) Pen is designed for, aquariums, aquaculture, education, water conditioning and many other applications. The T75 helps you make sure that your fish have the right TDS balance to help them stay healthy. TDS also help keep filters up-to-date and clean for water filtration. Keep TDS in your target range to help you achieve better results.

Design Features

• Measures Total Dissolved (TDS) direct.
• Easy-to-read LCD.
• Ideal range for aquariums (0 to 1999 ppm).
• Automatic temperature compensation.
• Units in ppm easily convertible to µS/cm.
• Factory calibrated with the ability to recalibrate if needed.
• Use MA9062 or M10032B 1382 ppm solutions
• 250 hours continuous use (3 x 1.5V batteries included).
• Simple one point calibration.
• Fully waterproof to IP65.
• Replaceable TDS electrode MA73075.

Care and Use

Maintenance

TDS/PPM electrodes can develop nutrient build up over time. To minimize build up, always rinse the probe in fresh tap or DI water after every use.

Converting TDS to EC

The Milwaukee TDS Pen, like all TDS meters, provides a measure of Total Dissolved Solids (ppm) reading, of contaminates per unit of volume in a solution.

TDS/PPM is often converted to µS/cm. Different scales include the 500 scale, 650 scale and the 700 scale.

Your TDS/PPM readings can be approximately converted to µS/cm as shown in the examples below.

1 ppm = 2 µS/cm on the 0.5 factor scale
1 ppm = 1.43 µS/cm on the 442 scale or .70 factor scale