A bottle of quats (quaternary ammonium compound) disinfectant has been in continuous use for two weeks in an open container on the barber station. What is the PRIMARY concern with this practice?

A bottle of quats (quaternary ammonium

Multiple choice — select the best answer

ARepeated immersion of implements dilutes the solution below effective concentration
BQuats evaporate quickly, leaving a residue that attracts bacteria
COpen containers allow organic matter accumulation and dilution, reducing efficacy below the registered concentration
DQuats become acidic over time and can etch metal implements

✓ Correct answer: C. Open containers allow organic matter accumulation and dilution, reducing efficacy below the registered concentration Quaternary ammonium solutions must be changed regularly because hair, debris, and water dilution lower the active ingredient concentration, rendering the solution ineffective per EPA label requirements.

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A bottle of quats (quaternary ammonium compound) disinfectant has been in continuous use for two weeks in an open container on the barber station. What is the PRIMARY concern with this practice?

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