The jury is still out
I got this because my loved one keeps getting DUIs and has no clue how much alcohol will get him in trouble or how long it stays in his system. And because this one is inexpensive and rechargeable.<br /><br />I tried it out on myself when it first arrived, and got .02 once and then consistently 0.0 after that.<br /><br />Last night my loved one had 2 large mixed drinks, so we gave it a test when we got home. I blew various numbers, including .19. I had not been drinking at all. After blowing several times, I got 0.  Then gave to my loved one, and he blew 0.  He tried again and blew .19 a few times. Then I blew .19 again.<br /><br />I was all set to return it, but decided to try again this morning, 10 hours later. The results are more believable this time.  He still has some alcohol in his system, .03.  I'm 0.<br /><br />Comments:<br />1. Make sure the device is fully charged.<br />2. My loved one seems to have a hard time not blowing spit into the device.<br />3. The device retains breath from one time to the next. If I blow after my loved one, I register >0, but if I do it again, I get 0.  If he got a lot of spit in the machine, I get lower values each time I blow until it gets down to 0.  If he blows after me, he registers less than after he blows a second time and subsequent times.<br />4. It's easier to blow directly into the tube on the device than into one of the mouthpieces, bug the mouthpieces do trap some of the moisture.<br /><br />I've got another couple of weeks to try it out, but I think it's going to work ok.  I suspect .19 may be the upper limit?
Rating: 3 stars