This meter measures pH, electro-conductivity, total dissolved solids and temperature in a single instrument.
To increase precision, you can select the meter which will work best with your range of conductivity, from purified to brackish waters.
There are only 2 buttons, yet you can select from a range of calibration buffers and even the temperature scale (C or F) most familiar to you. The housing is waterproof and rated for IP67 conditions.
The multi-parameter probe, HI 1288, includes pH, EC/TDS and temperature in one conveninet, rugged handle.
Other user selectable features include different TDS factors from 0.45 to 1.00, and a range of tempeature coefficients from 0.0 to 2.4% for greater consistency and reproducibility. Also selectable are standardized buffer recognition values.
It is supplied with pH/EC/TDS/T HI 1288 probe, with 1m cable, batteries, rugged carrying case and instructions.