If you operate a 24 hour convenience store that is adjacent to a bar… and you have no sense of right and wrong… you might want to make a bulk purchase of these cheap personal blood alcohol meters from Chinavasion.

Note: The result of this test gives BAC for reference only Chinavasion does not take any legal responsibility.

I would suggest that you print a statement absolving yourself from responsibility as well. I think you could put a pretty big markup on these things. If you ever buy one, don’t breath in, as they might be toxic.