Long time reader. First time poster. I finally severed my pool from the death spiral of Leslies this year. I am using liquid bleach instead of those darn stabilized pucks and my pool has never looked better. I had to re-up on my chlorine test reagents and was just reading the reviews on amazon. This is what one of the reviewers said:
" DID YOU KNOW?
The instruction pamphlet that comes with Taylor's testing kits say to use TWO scoops of this DPD powder, but if your test water sample turns pink after adding just ONE scoop of this reagent, you don't need to add a second scoop? As long as the water turns pink after adding the first scoop of powder, the testing procedure is unaffected by not adding a second scoop. What that means to you is that you can test your water for twice as many times now before you have to buy a replacement reagent bottle.
And that saves you money!!! "
I have yet to prove this to myself, but I would like to know if anyone has used this method with success? My water sample always changes to pink after the first scoop, but I have always added a second scoop, because that is what the directions I have say to do.