Couple of testing questions.......

samiguy

LifeTime Supporter
May 21, 2008
203
#1
Mostly curious about FC testing with the TF-100. I understand the extended test results for getting testing down to .2 ppm, but is it possible or wise to save on regent and test for higher levels? Such as using 5 ml of water...would that make each drop of regent value be 1ppm?
And....can you test for CC WITHOUT testing for FC first?
Haven't seen this covered and wanted to get a "professional" opinion!
Thanks!!!
 

RobbieH

TFP Expert
LifeTime Supporter
Aug 30, 2010
4,052
Dallas, TX
#2
Don't bother with the .2 ppm tests. Your pool doesn't require that kind of accuracy. You have to run the FC test to get your CC numbers.

If you just need a basic idea of where you are at, use the DPD test, the one where you match it to the color blocks. I don't use my FAS-DPD every day.
 

samiguy

LifeTime Supporter
May 21, 2008
203
#4
Was curious because at high shock levels (28ppm), was looking for a way to check often without using so much regent. Obvious OTO is not a solution here. Haven't seen it cover and wanted to ask.
 

CaOCl2

LifeTime Supporter
May 23, 2007
326
Montreal Canada
#5
It all depends. A 10% error in measuring 5 mL of water sample is significant (and it affects the end result), whereas a 10% error in measuring say a 250 mL is insignificant.