What pH is this?

[TimmyR]

I am having a hard time reading the pH scale. It seems like the color is never quite right. I am assuming in this case I am either off-scale or overthinking the color match. What's this look like?

 

[PoolStored]

7.9-8.0

 

[Newdude]

Use your thumbs to block off above and below what you want to compare. I find yes/no to be way easier than best of 3.


For example :

Higher than 7.8



Lower than 8.2

 

[proavia]

What is your FC?
If FC >10 the pH test is invalid.

How many drops of pH reagent did you use?
If you used 5 drops, try 4 drops and see if it's easier for you to read.

 

[TimmyR]

What is your FC?
If FC >10 the pH test is invalid.

How many drops of pH reagent did you use?
If you used 5 drops, try 4 drops and see if it's easier for you to read.

FC is 10.5. I used 5 drops. I'll try 4 drops next time. Thanks. I'm getting ready to add ~32 more oz of muriatic acid.

 

[TimmyR]

Use your thumbs to block off above and below what you want to compare. I find yes/no to be way easier than best of 3.


For example :

Higher than 7.8

View attachment 595379

Lower than 8.2

View attachment 595380

That's really helpful. Thanks!

 

[pjt]

A consistent background is key. To get good backlighting, hold the block in front of your computer monitor/tablet/phone with a blank white screen displayed. Also, try holding the block sideways or upside down. Sometimes that helps distinguish colors better. I also use two old hotel keycards to mask off areas and narrow down my decision.

 

[ajw22]

7.8

Any pH in the 7's is ok. It is not 8.2 and it is not 7.2. So pH is fine.

 

[pookiesunshine]

Thanks for the tips, i also have a hard time reading the scale, although i do try to use a white background.