Larger cya viewing tube, how much reagent?


Silver Supporter
May 12, 2020
The cya viewing tube that came with my Leslie's/Taylor kit was crushed. I ordered a replacement but didn't realize I ordered a slightly larger one! How do I use that one? How much water and how much cya reagent?


Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
Laughlin, NV
Equal amounts pool water and reagent. You need enough to fill the test vial you have to the lowest marked level (typically 30 ppm for non-TFP test kits)

Bama Rambler

Mod Squad
TFP Expert
Bronze Supporter
LifeTime Supporter
Jun 22, 2009
SouthWest Alabama
You can experiment with it, but I use 14.6 ml of each and it fills the view tube almost to the top.
I use 14.6 because it's marked on the sample vial and I have two of the 9198 vials. I fill one to 14.6 with water and one to 14.6 with R0013 and then mix the two in one vial on the speed stir.