The Myron L DS Analog Handheld 3 Range 532M1 handheld analog meter measures three ranges of conductivity (0-50, 0-500, 0-5000 mmhos/mS) and features automatic temperature compensation, and a built-in cell cup that contains self-maintaining electrodes that never need replatinizing. The 532M1 instrument offers three very useful ppm ranges. Like other three range and single range models, it features a unique electronic iInternal standard for easy and fast field calibration and range doubling.