HM Digital Handheld TDS Tester
The HM Digital TDS-4 Pocket-Size TDS Meter is highly effective and accurate due to its advanced microprocessor technology. Small and light, the sleek design offers a hold function, which saves measurements for convenient reading and recording, an auto-off function and LCD screen. With a measurement range of 0 to 9,990 ppm, this meter has a built-in digital thermometer and is calibrated with a 342 ppm NaCl solution. Carries a three-year warranty.