SM1 Single / TRM1 Triple TDS Meter 0-9990PPM — Portable LCD Water Purity & PH Tester

Compact, accurate TDS testing in single- or triple-probe configurations: the SM1 Single / TRM1 Triple TDS Meter delivers reliable water quality readings using advanced microprocessor control and an easy-to-read LCD. It measures total dissolved solids across a broad span of 0-9990 ppm for a wide variety of water purity checks and is offered as either a single or triple probe unit to suit different testing needs. Key features: - High-precision microprocessor electronics for dependable, repeatable TDS measurements. - Factory calibration with a 342 ppm NaCl solution; field recalibration can be performed with a mini-screwdriver when required. - Automatic power-saving shutoff after 10 minutes of inactivity to extend battery life. - Quick, tool-free hookup using the Mur-lok® Quick-Connect T-fitting (1/4 inch standard; also available in 3/8" or 1/2"). - Portable form factor: 7.6 x 2 x 4.7 cm (3 x .8 x 1.9 in.) and a lightweight 79.4 g (2.8 oz.), making it convenient to carry for on-site testing. This unit provides a straightforward, portable solution for monitoring water purity and pH with fast readings, easy calibration, and simple installation using standard quick-connect fittings.