With Sodium (Na) & Potassium (K) filters. 3 points calibration direct –out in ppm& meq/1, auto filter selection . 5 digit LED display with compressor and other accessories for lab & medical use.
With Sodium (Na) & Potassium (K) filters. 3 points calibration direct –out in ppm& meq/1, auto filter selection . 5 digit LED display with compressor and other accessories for lab & medical use.