I have some RoH. Seems to be very highly recommended, and I had a great time on the only tab I took. Problem is, I see some people posting reagent pics that are dark purple, almost like Kool-Aid. I snip off a piece of a tab (I've tried 2 different tabs), and it takes several minutes over the recommended time to turn colors, and it turns a very light, translucent purple.
Anyway, this is no indictment of John_ or RoH, I find him to be an excellent vendor and the product is A+. But do different tests react differently? Because the card that came with this one indicates that it should be dark purple in 3 mins and that's not the case, even with a half tab.
For the record this is a test kit from Quality Chemicals Co, which is one of if not the cheapest kit I found on the interwebs.
damn it