Apparently you're missing the picture here. This is not just for customers to test their weed before they purchase. Perhaps you haven't followed the news much either about how a few people have already died due to the edible line of the MJ industry and how right now politicians are calling for this so called *test kit* that we have here with DGRI. Also, don't only be narrow minded to think this is about just the recreational pot smokers, if that's the case I'd be worried.
You have to realize that MJ is legal in 21 states for medicinal purposes. This is a great way to be able to detect the range of THC of the weed and it allows medical professionals the easier alternative to be able to test the THC in a simple and I'm assuming (cost effective) way. So just remember this isn't just about the recreational tokers, you have many people with medical conditions of all sorts that could benefit from the medicinal values of weed, just now there is an easy way to figure out what range the THC content is of said weed/product.
GLTA
$DGRI