how often do my ph and ec meters need to be calibrated, any feedback apreciated
calibration
how often do my ph and ec meters need to be calibrated, any feedback apreciated
what meters you got then? i got cheap hanna? ph meter and have yet to do it (3months) so also would be interested in knowing, i got ec trunchion and it not needing calibration. ?
Just take the reading of your plain tap water every day before you use it and when it goes out calibrate it with the calibration solution.
All meter's vary but my cheap £40 one from growells last's for about 6 month's.
Can't comment on the ec as i'm using soil and organic's.
every 2 weeks is ideal i have a hanna combo pen
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