PH Meters

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
19,680
Northern NJ

JoyfulNoise

TFP Expert
Platinum Supporter
May 23, 2015
17,279
Tucson, AZ
I tried to find the screwdriver adjustment on my bottle of R-0004 pH indicator but couldn’t :scratch: I then thought maybe Taylor put it on the comparator tube but no such luck, no screw :scratch: I called Taylor tech support but the guy on the phone sounded baffled...he was sure all the bottles come factory-calibrated....

:laughblue:

Hahaha, thanks for the post Allen. Glad to see the probes working out for you. Please keep us updated on longevity and any quirks. Honestly there are days I’d rather just stick a chunk of plastic in the pool and get all my readings done.
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
19,680
Northern NJ
Hahaha, thanks for the post Allen. Glad to see the probes working out for you. Please keep us updated on longevity and any quirks. Honestly there are days I’d rather just stick a chunk of plastic in the pool and get all my readings done.
I have only had these meters since May. We will see how they hold their calibration over time. I occasionally run the color PH test as another validation of the meter.
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
19,680
Northern NJ
Do you remember roughly the cost of each?
ATC Meter from TFT is $15 and Hanna is $40.

I would have thought the Hanna meter would be better and hold calibration better but it seems to drift more. The most the ATC meter has been off during a calibration is .1. The Hanna meter has been off .4.

So far they have always drifted high on me.
 

jeremycrook

Gold Supporter
Sep 26, 2016
157
OKLAHOMA CITY / OK
ATC Meter from TFT is $15 and Hanna is $40.

I would have thought the Hanna meter would be better and hold calibration better but it seems to drift more. The most the ATC meter has been off during a calibration is .1. The Hanna meter has been off .4.

So far they have always drifted high on me.
Where do you find the solution to calibrate the meters? Can I find it cheap at the grocery or wallyworld?
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
19,680
Northern NJ
Where do you find the solution to calibrate the meters? Can I find it cheap at the grocery or wallyworld?
Never looked, but i doubt it. Calibrating solutions are industrial supplies. And I want to buy them from a trustworthy source as they are critical to the accuracy.
 

jeremycrook

Gold Supporter
Sep 26, 2016
157
OKLAHOMA CITY / OK
Never looked, but i doubt it. Calibrating solutions are industrial supplies. And I want to buy them from a trustworthy source as they are critical to the accuracy.
I have the yellow meter, it worked great for quite a while but then got a little quirky. I think I left the meter on after testing once and the batteries got low. It has sat ever since, but it was awesome while it lasted. I would like to get it going again.
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
19,680
Northern NJ
I have the yellow meter, it worked great for quite a while but then got a little quirky. I think I left the meter on after testing once and the batteries got low. It has sat ever since, but it was awesome while it lasted. I would like to get it going again.
I have had the problem of leaving the ATC meter on accidentally. The Hanna meter has auto power off.

From what i have read the probe does not like getting dried out. Hanna sells storage solutions for that puropse. I am not sure how much is worthwhile to invest in solutions for a $15 ATC meter versus replacing it. If you get 7.0 calibratimg solution you can try letting the meter soak in it for a while. It may bring it back.
 

Thasista

Gold Supporter
Jul 1, 2018
261
Western KY
My ATC pH meter has gone haywire I put it in pool water sample and it went straight to 7.8. I took it out dried it off and rechecked. This time it started going down then oscillated between 6.3 and 6.5. Is this a battery issue? I might have these batteries handy for my hearing protection ear buds (D10?) but wow that would have been quick. Opinions please.
 

JoyfulNoise

TFP Expert
Platinum Supporter
May 23, 2015
17,279
Tucson, AZ
With all the errors would it be a good idea to replace the meter every season? They are cheap enough.
Even in the industrial chemistry labs I worked in, pH probes were considered consumable expenses. We replaced them every year. And this is a setting where probes were kept in their appropriate storage liquids (typically saturated potassium chloride) and calibrated/used on a daily basis. I can only imagine that an infrequently used cheap pH pen-meter will fail a lot sooner. Seasonal replacement is probably the best approach.