SarahRides
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- Joined
- May 2, 2011
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If you seal the container, can you re-use the calibration solution for the Hanna pH meters?
Just an FYI:
Remember that ideally you want to bracket your sample between 2 standards. So if your measuring a typical wine with a pH of 3.something your actually not doing yourself any favors by doing a 2 pt calibration with 4.01 and 7.0 buffer which normally come with pH meters. If you do this your now calibrated within 4 and 7 but outside of those ranges (either way) your going to be off.
If you really want a 2 pt calibration for a 3.someting sample, use a 2.0 buffer and a 4.01 buffer. Because the pH scale is not linear your better off using a single one point calibration close to your sample pH or bracketing your sample between a high and low buffer if you really want to do a more accurate 2pt calibration.
Keep the probes wet with 4.01 solution and not water or distilled water. Check the cap frequently (monthly) as it will dry out.
They make a storage solution for that, #HI 70300. What is the down fall if you let it dry out besides having to soak it for a few hours before use?
Ok, thank you! I'm going to play around with it some more tonight, see how to do the single point calibration and re-test to see if I get numbers that look more accurate! So I probably didn't even need to buy the 7.01 or storage solution then.........
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