What pH would you say this is?

[Fluorescent_Frogs]

I find it so hard to differentiate between the 7.8 and 8.2 colors.

Thank you!

 

[mknauss]

Mid range. 7.5 to 7.8.

 

[Fluorescent_Frogs]

Mid range. 7.5 to 7.8.

Thank you!

 

[AUSpool]

I would say the same, it lacks the ‘purple’ to be in the 8 - 8.2 range.

Try using one less drop. And an unwinkled white background, the wrinkles add shadows. The second pic seems to have less light but could be image.

I found editing a photo of the comparator really helped me. Like this. Removing the distractions I can see that it lacks the purple.

 

[Newdude]

Removing the distractions I can see that it lacks the purple.

Removing everything but one field i see darker than 7.8. (More pink)





But not quite 8.2. (Less purple)

 

[Fluorescent_Frogs]

I would say the same, it lacks the ‘purple’ to be in the 8 - 8.2 range.

Try using one less drop. And an unwinkled white background, the wrinkles add shadows. The second pic seems to have less light but could be image.

I found editing a photo of the comparator really helped me. Like this. Removing the distractions I can see that it lacks the purple.
View attachment 612466

Thank you! One less drop is a good idea. I have a hard time distinguishing between the color and the brightness of it.

 

[Fluorescent_Frogs]

Removing everything but one field i see darker than 7.8. (More pink)


View attachment 612470


But not quite 8.2. (Less purple)


View attachment 612472

Oh this is so helpful. I may have to start looking at just each section individually. Thank you!

I wish there were a slightly more accurate way to measure this!

 

[Newdude]

I may have to start looking at just each section individually

I use my thumbs to block off the others. You can cut a template from paper or such too.

And 4 drops definitely works better for me most the time.

I wish there were a slightly more accurate way to measure this!

You only need it to be close, which, with a little practice you will do fine.

 

[AUSpool]

Oh this is so helpful. I may have to start looking at just each section individually. Thank you!

I wish there were a slightly more accurate way to measure this!

There are limitations to the tests, but after a little bit you do get better at it.

There are other ways but they can be even more challenging if you do it properly.

Try making one of these little cards with the window cut out.

 

[PoolBrews]

Oh this is so helpful. I may have to start looking at just each section individually. Thank you!

I wish there were a slightly more accurate way to measure this!

I use the Apera Instruments AI311 Premium Series PH60 Waterproof pH Pocket Tester Kit. It's a digital meter and quickly gives you a very accurate reading. Cost is around $80 from Amazon. I calibrate it about twice a year. I've been using this for the past 5 years and never had an issue.

 

[kenlip]

I find it so hard to differentiate between the 7.8 and 8.2 colors.

Thank you!

I loaded the pic into Lightroom, masked the sample section and reduced the saturation. I suspect you used too many drops.