pH Probe Calibration Question
- Thread starter Justdrew
- Start date
For rinsing, either is fine. I use RO/DI.
If it is a single junction probe, rather than double junction, RO/DI soaking for long periods may suck out some of the needed salts inside of it.
If it is a single junction probe, rather than double junction, RO/DI soaking for long periods may suck out some of the needed salts inside of it.
No need to stop.
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[17]shawn[17]
New member
Not to hijack this thread but I have a sort of on topic question for Randy
In my instrumental methods of analysis class we learnt that at in certified analytical laboratory’s the majority of lab equipment including pH meters must be calibrated daily if not multiple times a day, is the only reason why hobby grade pH meters “can” go months without calibration the fact that high precision isn’t required? because i cant imagine a $100 reefkeeper having more protection from instrument drift than a $600 benchtop meter
In my instrumental methods of analysis class we learnt that at in certified analytical laboratory’s the majority of lab equipment including pH meters must be calibrated daily if not multiple times a day, is the only reason why hobby grade pH meters “can” go months without calibration the fact that high precision isn’t required? because i cant imagine a $100 reefkeeper having more protection from instrument drift than a $600 benchtop meter
Generally, we do not need high precision, and we are not guaranteeing our answers to anyone.
You'll probably notice that the first bit of advice we give to anyone with a substantially unusual pH reading is whether they recently calibrated, and in many cases, the "problem" disappears when folks recalibrate.
Also, many of us leave the pH probe in the same solution (the tank) continuously. We are not constantly moving it around to different types of samples, potentially messing with it. I'm not sure if that matters, but it might
You'll probably notice that the first bit of advice we give to anyone with a substantially unusual pH reading is whether they recently calibrated, and in many cases, the "problem" disappears when folks recalibrate.
Also, many of us leave the pH probe in the same solution (the tank) continuously. We are not constantly moving it around to different types of samples, potentially messing with it. I'm not sure if that matters, but it might
Rploaded
New member
In respect to labs calibrating frequently. Lab equipment is more like a race car. Very good, precise but touchy.... Just like race cars use different tires depending on conditions, lab probes need their tires checked frequently to insure proper running on many different tracks. Our hobby geo metro ph probes and equipment are much less touchy and not as precise, but they drive the same route everyday...
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