Hi folks I am doing lots of testing trying to get a handle on my YO_YOING CC results. Things I've learned so far as far as testing:
A large sample bottle like an old fashioned restaurant ketchup bottle works great, you get enough water to fill rinse and fill your test vials.
Take your samples mid-way down the side of your pool. Invert your test bottle or vials and the fill them as far down as you can reach and cover them as you raise them out of the pool(thanks MarianParoo)
The vials in your test kit are good but I bought extra vials with the black lines which are much easier to see.
I bought 3 extra speedster magnetic beans (thanks Richard320) so with 4 and vials to go with you can test everything in one setting, I went as far as labeling the vials and store the magnetic stirrers in their corresponding vials. This way you do all your clean up and rinsing once.
FC, CC, and TC in the one marked Chlorine only.
TA, Salt, and CH each get their own.
Move it all inside if its windy, drops are more accurate
Salt testing takes a while and then BOOM it turns red.
I hope this helps, remembering how many drops is all on you…..