I started the summer off with a new Taylor DPD-FAS test kit (K-2006). As the summer wore on, I started to need refills on some of them, so I oredered Taylor reagents in larger quantities frm Amazon, and refilled the bottles in the kit, as needed.
Prior to refilling the R-0871 chlorine reagent, my FC read 3.6. The next day's test with the new reagent yielded a FC reading of 12.2. My FC readings have been in the high side ever since. B
oth have expiration dates well into 2016 and 2017, and have been stored indoors out of the heat.
What gives? I'm not sure what to think, and have lost confidence in my test results.