TF100 Chlorine Test Question

[mindcriminal]

I have a quick question regarding the chlorine test. After I add the powder, I add a drop of R-0871. I swirl the water. It turns clear....if I wait 1 minute it starts to turn pink again. This continues to happen for a number of drops. Do I keep adding drops until the liquid stays clear after waiting and then take the measurement? Or is it the initial clear reading that tells me my FC? For instance, right now I am on drop 5 and it is still faintly pink if I wait for 1 minute or so.

Thanks!

 

[woodyp]

Turns clear, you're done without waiting. Waiting will usually let it turn back. Just a few seconds of swirling then add another drop if no change. Your problem is, if 1 drop is turning it clear-----ya' got dang little FC! .5 to be exact.

 

[Richard320]

When it stays clear for a few seconds while swirling it, that's it. It will always go back to pink if you wait long enough.

 

[mindcriminal]

Roger that. Thanks guys.