What is the difference between a screener, an evidential unit, and a workplace tester?
A screener is a unit that can screen individuals for the presence of alcohol. A screener is also commonly used for personal use. An evidential unit is a fuel cell sensor that is also used for screening purposes, but will generally be within +/- .005% BAC all the way up to .400%. A workplace tester is a unit that is a fuel cell unit that can do an air blank, print, and do confirmation tests. A workplace unit is used for companies/people who do alcohol testing on people for Random, Pre-Employment, Reasonable Suspicion, Post-Accident, Return to Duty, and Follow Up.
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