Correct pH Comparator Doubts

[packetfire]

Ran out of R-014, so ordered another bottle. But, looking at various product photos, some R-014 bottle labels mention a "Residential" comparator, while others mention a "Sure-Check" comparator. Google thinks that the "Sure-Check" is the 9056, and "taylor residential comparator" does not point to any single item. My comparator has no markings to indicate its pedigree, but it looks just like this one - https://www.troublefreepool.com/attachments/fe0216d9-f37d-42c9-a929-8c4eecaedd50-jpeg.146508/

I assume I am using the correct pH scale for "5 drops of R-014", but I ask because I have no way to verify, and now I wonder.

Also, with this specific comparator, the "2" and "3" FCL levels look so similar, I can't really differ between them, so I just use a 10ml DPD test, and never use the OTO. I am using the comparator in a brightly-lit kitchen against a pure white background, so I don't know how one is expected to differ. Don't really care, but interested in why Taylor would screw up something so basic in a mass-produced product sold as precision test equipment.

 

[IceShadow]

If the R number is the same then you’re fine. It’s all the same chemical.

 

[splashpad]

Ran out of R-014, so ordered another bottle. But, looking at various product photos, some R-014 bottle labels mention a "Residential" comparator, while others mention a "Sure-Check" comparator. Google thinks that the "Sure-Check" is the 9056, and "taylor residential comparator" does not point to any single item. My comparator has no markings to indicate its pedigree, but it looks just like this one - https://www.troublefreepool.com/attachments/fe0216d9-f37d-42c9-a929-8c4eecaedd50-jpeg.146508/

I assume I am using the correct pH scale for "5 drops of R-014", but I ask because I have no way to verify, and now I wonder.

As long as the reagent number was the same, then you can get whichever size refill you need Some of the testing comparators are different sizes, so use different amounts of drops (and different reagents even). See: Technical FAQs

Also, with this specific comparator, the "2" and "3" FCL levels look so similar, I can't really differ between them, so I just use a 10ml DPD test, and never use the OTO. I am using the comparator in a brightly-lit kitchen against a pure white background, so I don't know how one is expected to differ. Don't really care, but interested in why Taylor would screw up something so basic in a mass-produced product sold as precision test equipment.

Most can't, that's why TFP does not use the OTO (yellow drops) as the basis for adding or waiting on chlorine in the pool