Owner of pool since 1986. TFP member and user since 2013. Still confused about pH testing. (Chlorine bleach used as sanitizer.)
I now use three testing kits.
Primary test kit since 2013 is TFP-100. But no pH test.
Primary test kit for pH is K-1000.
Secondary test kit for Cl, pH, & TA is Bioguard Multi-Test 1200-V.
K-1000 pH test range is 6.8 to 8.2 but in fairly wide intervals of 6.8, 7.2, 7.5, 7.8 and 8.2 by color matching or interpolation of color matching.
Bioguard pH test range is 6.8 to 8.2 but in fairly wide intervals of 6.8, 7.2, 7.4, 7.6, 7.8 and 8.2 by color matching or interpolation of color matching.
In 1986 (when began a pool life), pH "ideal" range for vinyl liner pool was 7.6 (range 7.4 - 7.8).
In 2013 when I became a TFP member, the recommended pH range was 7.2 - 7.6.
Since TFP membership in 2013, I have noticed that recommended TA range has dropped to 50- 90(+) (from 100 - 120) and pH range is now 7.2 - 7.8.
After pool season last fall (2016) I purchased a pH meter model PH-009(I) pen type for greater accuracy in pH measurements.
I have NOT yet used it since I was SLAMMING pool so far in 2017 and it is still covered (but clean and clear) as of today, but at 67 deg F.
Since the PH-009(I) pen testing procedure is dependent on temperature and uses exhaustible chemicals, and must be calibrated to achieve accurate results, is pH ACCURATE testing really necessary?
If so, I believe I will need more expendable chemicals for testing for the PH-009(I) of the pH buffer powders at pH 6.86 @ 25 deg C and pH 4.01 @ 25 deg C during the 2017 season (May - early Sept.)
--OR--
Are the two test kits I have (K-1000 and Bioguard Multi-Test 1200-V) adequate for achieving reasonable pH results for use with the accurate free Cl and TA testing with TFP-100?
Thank you.
I now use three testing kits.
Primary test kit since 2013 is TFP-100. But no pH test.
Primary test kit for pH is K-1000.
Secondary test kit for Cl, pH, & TA is Bioguard Multi-Test 1200-V.
K-1000 pH test range is 6.8 to 8.2 but in fairly wide intervals of 6.8, 7.2, 7.5, 7.8 and 8.2 by color matching or interpolation of color matching.
Bioguard pH test range is 6.8 to 8.2 but in fairly wide intervals of 6.8, 7.2, 7.4, 7.6, 7.8 and 8.2 by color matching or interpolation of color matching.
In 1986 (when began a pool life), pH "ideal" range for vinyl liner pool was 7.6 (range 7.4 - 7.8).
In 2013 when I became a TFP member, the recommended pH range was 7.2 - 7.6.
Since TFP membership in 2013, I have noticed that recommended TA range has dropped to 50- 90(+) (from 100 - 120) and pH range is now 7.2 - 7.8.
After pool season last fall (2016) I purchased a pH meter model PH-009(I) pen type for greater accuracy in pH measurements.
I have NOT yet used it since I was SLAMMING pool so far in 2017 and it is still covered (but clean and clear) as of today, but at 67 deg F.
Since the PH-009(I) pen testing procedure is dependent on temperature and uses exhaustible chemicals, and must be calibrated to achieve accurate results, is pH ACCURATE testing really necessary?
If so, I believe I will need more expendable chemicals for testing for the PH-009(I) of the pH buffer powders at pH 6.86 @ 25 deg C and pH 4.01 @ 25 deg C during the 2017 season (May - early Sept.)
--OR--
Are the two test kits I have (K-1000 and Bioguard Multi-Test 1200-V) adequate for achieving reasonable pH results for use with the accurate free Cl and TA testing with TFP-100?
Thank you.