Taylor kit has R-0872 (Bromine) reagent in it.

[SalemCastles]

Sure I'd be glad to ... just so I'm clear it tested 2.5 ppm with the R0872 so I should double that to give a Chlorine level of 5ppm, which by the way seems to be what the OTO kit is saying.

[SalemCastles]

I called Taylor and they said the factor is to divide my readings by 2.25. Surprising me is that comes out to .6ppm (3 drops x .5ppm) / 2.25 when I thought I had 5ppm or so based on the other kit I have. It's showing 0 CC so that's good I guess. I have the other kit on the way and will still do a direct comparison and report back.

Glenn

[SalemCastles]

Results for 10 ml sample .5ppm resolution.

Bromine R0872 = 11 drops Chlorine R0871=15 drops.

CC 0
TA 140
PH 7.4

[waste]

Thanks for the 'field report'!

Looks like 2 or 2.25 isn't the proper multiplier.

[SalemCastles]

The plot thickens a bit .... I had emailed Taylor with the same question and just got this reply. Seems part of the difference is that you multiply the drops by 1.25 and not .5 to get a bromine level and then divide by the 2.25. Still doesn't work out and dividing by 2 is closer but it seems it's not linear based on my direct comparisons. Today's reading was 8 bromine drops and 12 chlorine drops.

FAS-DPD BROMINE (1 drop = 0.5 or 1.25 ppm)

"Yes, you can if it is the only titrating reagent you have available. Using the bromine instructions in the link below, obtain a bromine reading and divide by 2.25. We do strongly recommend using the R-0871 for testing chlorine."

http://www.taylortechnologies.com/pr...er&Number=5524

Sincerely,
Jody O'Grady
Manager, Customer & Technical Services