Backwashing and shocking

[waterbear]

Just a caveat:

If your kit is the "DPD" kit, using the "DPD" test for chlorine, you cannot use the dilution method--that only works on the OTO chlorine test.

Carl, not true!!!!!

In fact, there are instructions for dilutions on the lid of the Taylor K-2005 (and the equivalent Leslies kit) and the comparator has markings molded in for 1:1 and 4:1 dilutions. While it is more cumbersome than using an FAS-DPD kit it is no diferent from doing dlutions with OTO and it give more meaningful info since you can test both FC and CC and not just TC.
If the sample is diluted low enough it doesn't bleach out.
I suspect that the $47 Leslie's kit that jmcrae said they bought is the rebranded K-2005 that Leslie's sells.