LaMotte TDS 5 Meter - Manual (Page 9)

16 TDS 5 METER TDS 5 METER 9
Meter Set-up, continued
Setting the Conductivity-to-TDS Conversion Factor
The TDS 5 meter has a default conversion factor of 0.67. Using this factor
should give good results for most applications (including natural waters and
other applications that calibrate to 442 standard solutions). Follow the
procedure below to adjust the factor for different salts, chemicals, or
nutrient solutions.
Measuring Temperature