We currently have a Taylor DPD Test Kit. We're a condo complex, semi-public pool, and are required to test the
water four times a day which isn't an issue. The issue is there are now two of us doing the testing and possibly
a third with the summer coming. One person is in his seventies and has been maintaining the pool as well
as doing the testing for the last few years. I take a little more time testing, such as adding reagent at a more
conservative pace and swirling whereas he'll add a bunch of drops and swirl, possibly going beyond what the actual
reading might be. For example, over the last several evenings I've been getting the calcium hardness up from
200 to a goal of 260. Last night I added enough product to boost it up from 250 to 260. This morning he checks it
and writes 290. I check it within an hour and get 260. Then he tells me he checked it again late this morning and
got 260, so it must've dropped from 290! Checking the comparator he sees one color while I see another.
To make things more accurate across the board with different users I was thinking of going with a photometric test kit,
the Lamotte Color Q 7 or Color Q 7 Plus. I was just wondering if anyone has any experience with these or knows
of anyone who does and could offer advice on this kit or any others. Thanks and apologies for the lenght of the post.