I just got a PH meter from Amazon. It is the Vantakool meter. I calibrated it last night using the 6.86 and 9.13 buffer packs in distilled water. After calibration tested on the buffer packs read fine. Tested my pool this morning and it showed a PH of 8.3. The test from my TF 100 said 7.5. I even resorted to the random number generator (test strips) I had and it showed between 7.2 and 7.8 so 7.5 seems good. Does anyone else have experience with this meter. Either the meter is messed up or I did calibration wrong.
PH Meter issue
- Thread starter wprileyjr3
- Start date
- May 23, 2015
- 24,417
- Pool Size
- 16000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
pH meters should be calibrated just prior to testing. The instructions indicate a 2-point calibration procedure - 6.86 first, then 4.00 buffer. The 9.18 buffer is only for accuracy checking, not for calibration.
Ok. I will calibrate using 4.0 and 6.86 and see if it helps. The instructions on this one say to calibrate with 6.86 and 9.18 if solution being tested will be above 7.
- May 23, 2015
- 24,417
- Pool Size
- 16000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
I redid the calibration with the 4.01 and 6.86. It now tells me the pool is 7.6. Which is in line with the other readings. I checked it with the 9.18 and it only reads 9.0. So there may be an issue at the high end. I rinsed with distilled water each time. So it seems the instructions in the package were wrong.
- May 23, 2015
- 24,417
- Pool Size
- 16000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Try calibration using 4.0 buffer and then the 9.18 buffer. See if it reads the 6.86 buffer correctly.