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#1
08-09-2012, 03:33 AM
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Hi Keith
My understanding is that they are submersible. I however have always played it safe by keeping the dry end above the water. I do not known if this is true but my understanding is that the probe will last longer if it is cleaned regularly with a soft tooth brush and kept out of any direct light. Tom R 
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#2
08-09-2012, 08:18 PM
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I called a local pH manufacturer up one time and was told to store them in Soaker Bottle Solution or use a 4 pH Buffer as they will prolong the life of the sensor.
I use to purchase my sensors on eBay for around $20.00 but was having them fail after a few months (glass looked fine, they just would not calibrate). Finally I went with a US manufactured product on Amazon and they are a bit more pricy but I am getting 2 - 3 years out of them. Has anybody seen the new pH meters that turn your iPhone into a pH meter? I am seriously thinking of getting one.
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