And the pH pen needs to be submerged for 30 seconds to get an accurate read? I assumed it would be immediate?
Using Citric Acid in DIY
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Do they mean coffee filter paper or is a standard paper towel sufficient?
Use distilled water. The pH of tap water can vary depending on location.
I would do an initial calibration an then check it in distilled water from time to time. The stability will depend on the quality of the instrument.
The reason it needs time is that it probably takes multiple tests and averages them.
When they tell you to use filter paper, they're assuming you are in a lab. I would use any clean and lint-free paper.
I would do an initial calibration an then check it in distilled water from time to time. The stability will depend on the quality of the instrument.
The reason it needs time is that it probably takes multiple tests and averages them.
When they tell you to use filter paper, they're assuming you are in a lab. I would use any clean and lint-free paper.
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Why does the meter keep reverting back to my first calibration (6.86)? This was using the 9.18 powder ...huh???
Why does the meter keep reverting back to my first calibration (6.86)? This was using the 9.18 powder ...huh???
Maybe 6.86 is its "Neutral State".
And then the Meter Reads whatever you are testing and calculates if it is More Acid or Alkaline then the Calibrated 6.86ph.
Why does the meter keep reverting back to my first calibration (6.86)? This was using the 9.18 powder ...huh???
BTW - I have a ph Meter somewhere in some drawer or closet.
And as I recall on mine, It Only reads ph when it is in a liquid and the button is being pushed. Once I take it out of the Solution, it reverts to like 3 Bars (---).
Maybe that is what yours is doing?
Once it is Out of the Liquid it reverts to the Calibrated Value?
There were 3 different levels of pH powder for calibration. I followed the steps exactly. But this is my first time using a pH meter
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