Yes of course .
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Type: Posts; User: mshur
Yes of course .
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First pump is different since i change length of the tubing. others are the same
Of course ! Probe calibrated and show correct PH calibration fluid
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Very interesting that you mention after switching from P3 to P4 you getting lower reading!! I am having exactly the same problem! pump calibrated several times using digital scale. So this is not a...