How it works:

- Put tube in both hands. Press both ends together to crack protective foils. Two "clicks" must be heard.

- Blow 2x for 10 sec

- Result after 1 min: Compare the color of the crystals (center of the tube) with the color scale.

The Xantus Alcohol Test is single use test, which means it can only be used once.

The blood alcohol limit in most US states is at 0.08% - most people have that after two glasses of wine.ISO, CE, FDA and MDAA certified made in Europe, 20+ years experience, leading technology.