[NAFEX] pH meter use

Jim Fruth jfruth at uslink.net
Wed Dec 7 10:10:15 EST 2005

    To get accurate readings using a 'cheap' pH meter, the user must use a
scrubby, such as a Scotch-brite pad to polish the (oxidized) tip.  If the
tip is gray in color, it is oxidized and won't give an accurate reading.
The tip needs to be a sparkling silver color.  Equally important is that the
medium to be tested be thoroughy saturated - if too much water is added, the
pH reading will be affected by the pH of the water.  Before expecting a pH
reading, allow the material to completely drain before taking a reading.

Jim Fruth
Brambleberry Farm
Pequot Lakes, MN

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