The OTO Bromine test, which is, of course, the same as the OTO TC test, with a different scale, is the "sixth test". In other words, there is no difference in the test kits, just the label. Oh, and the nifty box that they no longer provide.
Re: HTH 6-Way Drop Test vs the Older HTH 5-Way Drop Test
The OTO Bromine test, which is, of course, the same as the OTO TC test, with a different scale, is the "sixth test". In other words, there is no difference in the test kits, just the label. Oh, and the nifty box that they no longer provide.
Carl
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