This meter offers high-accuracy measurement of pH, electrical conductivity (EC), total dissolved solids (TDS), and temperature. 
 
It is waterproof (and even floats); has large, easy-to-read, dual-level LCDs; and features an automatic shutoff to conserve batteries. EC, TDS, and pH readings are automatically temperature compensated. The EC/TDS conversion factor and temperature compensation coefficient (Β) are user selectable. 
 
Features 1- or 2-point pH calibration with 2 sets of memorized buffers. EC/TDS calibration is automatic. 
Fast, efficient, accurate, and portable, this technologically advanced meter brings you all the features you have asked for and more. Includes a protective cap, electrode removal tool, batteries, and instructions. 
 
Accuracy
pH, ±0.05; EC, ±2% FS; TDS, ±2% FS; temperature, ±0.5° C (±1° F)
Range
pH, 0.00 to 14.00; EC, 0 to 3,999 µS/cm; TDS, 0 to 2,000 ppm; temperature, 0.0 to 60.0° C (32.0 to 140.0° F)
Resolution
pH, 0.01; EC, 1 µS/cm; TDS, 1 ppm; temperature, 0.1° C/F
Size
6-2/5 x 1-3/5 x 1” (163 x 40 x 26 mm)
Weight
3-1/2 oz (100 g)