I had another sorted of unrelated question:With DPD only drops, it's very important to make sure you're getting well formed drops and that you hold the comparator block up to a bright, uniformly lit background (I use white paper). Indoor lighting is really bad for color rendering.
I have found I can get the two tests to match within a ppm or less difference.
Sent from my iPhone using Tapatalk,16k gal SWG pool (All Pentair), QuadDE100 Filter, Taylor K-2006
With the CC test regarding MPS interference, I know Taylor makes a reagent to fix it, but without that, how long after adding MPS (say less than an oz) can I test CC without having to worry about the interference?