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PH Probe

Don't know, but you can always try to calibrate it. You should always store PH probe in 4 buffer. I have lab grade 4, 7, 10, 12.45 buffer, if you need to calibrate your PH probe.
 
Put it in lemon juice for 24-48hrs then recalibrate. Most, when left dry, can be brought back to life. You can store it in lemon juice as well.
 
I think it was left out for 1-2 days. I have another probe to confirm that they are both reading the same. Thanks.
 
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