Re: [Killietalk] pH meter

[Sue Katz <dskatz at earthlink_net>]

Hi Barry
Check the meter to see if you have a replaceable electrode.  It's cheaper to replace an electrode than the whole meter.  You may have banged it up.  Also, it is probably not the meter - it is probably the electrode.
Soak the electrode part in detergent for a bit, rinse it well and see if you have restored the response curve on it.
I'd recommend another Hannah meter, but I get the ones with replaceable electrodes (either BNC connection or screwed-on type.  One advantage from the replaceable BNC connection electrode is that I can soak the electrode in acidic soaking solution.  Another is that I can refill the electrode and clean crystals out when needed.  A third is that I have a foot or so of cable to move the electrode and keep the meter far from water.
Sue Katz
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