k. Followed video from TAYLOR.
This one
Went to the pool, rinsed the bottle well under water. Not near any skimmers or returns.
Dipped arm into water elbow deep, bottle upside down, flipped bottle upright, filled. Closed with earlier well rinsed cap inside pool water too.
Came home to test.
Filled to 25mL (as vid said use 25mL if Cl level is low or unknown). k.
Added 2 scoops of powder R-0870. Very slight pinkish. Added 3 more scoops at which time liquid turned pink, kind of vibrant but not too much (so vague).
Then added drops of FAS-DPD reagent R-0871, counting each drop until liquid turned colorless.
Well, kept on adding, was almost colorless but not colorless. After some seconds, started getting more pinkish to kept adding.
Got to 55 drops, and to be perfectly honest, liquid was not 100% colorless (very slight mist but against white sheet of paper you could tell).
Stopped there at 55. Multiplied by 0.2 to get FREE CHLORINE PPM: 11ppm.
Then added 5 drops of reagent R-0003 per instructions (to the existing mix). Agitated, and it was pink.
Per instructions, started adding R-0871 again (FAS-DPD reagent), until the liquid became colorless again and stayed there.
Well again, kept on adding and got to 60 drops, at which time liquid was not really really colorless (again, against white paper).
Got to 60 drops this time, stopped because I am gonna use the whole ****** bottle. Multiplied # of drops this time, by 0.2. My Combined Chlorine number: 12 ppm.
IMO, since liquid was not totally colorless each time, I think both numbers are POS lie, but if I kept adding, I am sure I would be adding another 100 drops to get to colorless (as I perceive colorless, as without color, any color).
So obviously I must be doing something wrong here. Anyone care to guide my arze to mistake and how to do this better?
Isnt colorless supposed to be actually colorless, zero color, none? I dont feel like spending 50 bucks on reagent so I can learn.
I did not proceed past above, as I am sure I am screwing something up and will be doing over.
Thanks.