I once read that levels such as CH are best read when the water temp is around 70-80F. Since the water is currently colder than that, I put my test sample out in the sun for a little while until the water was warmer. Will that distort any readings? (the bottle is not clear btw, so I assume it won't break down the chlorine levels in just 30min?).
Reason I did this is because my CH reading seemed way off when I tested it the other day (cold water). It seemed out of line with previous readings, so today I tested it again but with the water warmed up a bit and the reading was back to normal.