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Technical tip 07: Procedure for Setting mmol/L Unit in LAQUAtwin Ion Pocket Meters


This procedure is only applicable for LAQUAtwin Na-11, K-11, NO3-11, and Ca-11 models, which have special set-up mode to show reading in mmol/L unit. Note that the mmol/L unit itself is not indicated in the special set-up mode and will not appear on the LCD after following this procedure.


1. Press ON/OFF button to switch off the meter.


2. Press and hold MEAS, CAL, and ON/FF buttons simultaneously for 3 seconds. 


3. Wait for the meter to display Init.


4. Press and hold MEAS button for 5 seconds. The meter will display ON and switch off automatically.


5. Press MEAS and ON/OFF buttons simultaneously for 3 seconds.


6. Wait for the meter to display unit setting.


7. Press MEAS button repeatedly until both ppm and mg/L units disappear and Unit alone is displayed.


8. Press CAL button repeatedly until the meter switches off.


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