Guth stock solution ampoules are prepared under the highest quality standards, using Type I water and USP ethyl alcohol.
A precise concentration of a “working solution” is prepared by the end user in the field when the contents of the ampoule are properly mixed with purified water in a 500ml Class A volumetric flask for use in simulators to check and or calibrate Alcohol Breath Test Instruments.
Stock solution ampoules are prepared in standard concentrations to give an alcohol breath test instrument the following readings:
- .05 gms%, .10 gms%, .15 gms%, Other concentrations are available.
- Ampoules are packaged 16 ampoules/box and come with instructions for preparing the working solution.
milton yanquen –
Hi, what range of uncertainty do you report for these materials.