The pocket indicators of the series Primo guarantee a great precision of conductivity (EC) and total dissolved solids (TDS) measurements.
Thanks to the internal microprocessor, such type of indicators make calibration and temperature compensation automatically.
For calibration, it is sufficient to keep pushed for 3 seconds the switching-on, thus the tool ask on the display which is the value of the appropriate solution; then you immerse Primo's probe into the solution and in few seconds the timer is calibrated and ready to use.
Primo measures TDS from 0 to 1999 ppm, with conversion factor 0.5.
These pocket tools are the best solution for practical rapid controls of the water quality.
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