Different FC results - “R-0870 w/ R-0871” vs. “Taylor K-1000 w/ R-0014”

Stoopalini

Gold Supporter
Jun 8, 2020
463
Central Texas
Pool Size
14060
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
Testing FC, using the K-1000 Taylor kit, it’s reading in the 5-10 range. But using the TF-100 drop kit (R-0870 powder with R-0871 FAS/DPD solution), I’m getting 3.5.

Is this within realm of variance for the K-1000 Kit? Or, could my solutions be old (kit is only a month or so old), or does the K-1000 kit test total chlorine (FC + CC)?

R-0003 with R-0871 is showing no CC though.... So I don’t think the K-1000 is testing total Chlorine.

I’m just a bit confused and want to be sure I’m getting good test results.
 

Stoopalini

Gold Supporter
Jun 8, 2020
463
Central Texas
Pool Size
14060
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
K-1000 does test Total Chlorine but as you said with new water & no CC then FC is going to equal TC. I'd have a hard time telling the difference between 3.5 & 5 using K-1000 kit.
Makes sense. I'm actually colorblind, so I'm reliant on my wife or kids to tell me which color it's reading. My guess is it's probably reading the 3-5 range and not the 5-10 range. A few mins ago, I tested again using both .. and my wife actually said she can't seem to tell the difference, so she just chose the higher number.

PS - The new pool looks awesome!
Thanks! We're loving it :)
 

Stoopalini

Gold Supporter
Jun 8, 2020
463
Central Texas
Pool Size
14060
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
Yeah the K-1000 isn't as accurate as the drop test.
Note that there is no range on the test block. The 5 is used for a chlorine pool & the 10 is for a bromine pool. Disregard all the numbers under Br.
Ahh, makes complete sense. I was reading it as "3-5" range, and "5-10" range ..LOL ... I didn't even notice the "Br"
🤦‍♂️
 

PoolNewb2020

Well-known member
May 7, 2020
302
Lathrop, CA
The OTO test, for TFP maintained FC levels, is pretty much only good for indicating if there is chlorine in the water. I let my kids use it as they like the color change.
FAS-DPD is the test you want to use.
 
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