I think it is a good product…the pill caps are somewhat difficult to get into the smaller test chamber without spilling some of the powder into the “control chamber” which will mess with the color of the control liquid you compare the “test” side to. I think it should come with some sort of funnel or perhaps a bigger capsule so that when you undo it, it isn’t sooo full above the brim ready to spill. I used a very small funnel for ease of use, but for someone with overly shaky hands this may not be feasible to use without a funnel or some sort. Other than that, a very simple, accurate and not to mention, affordable test kit.