hand-held spectrophotometric breathalyzers have fallen inti disuse since 1990's. based on your observation during the experiment, what problems exist with this method of determining BAC that woukd cause other methods to be preferred?

2. Hand-held spectrophotometric breathalyzers have fallen into disuse since the 1990 's. Based on your observations during this experiment, what problems exist with this method of determining BAC that would cause other methods to be preferred? Explain