TDLR classifies chlorine bleach solutions into 3 categories based on

• A. Temperature
• B. pH
• C. Concentration and exposure time
• D. Color

Answer: (C)

Disinfection power of chlorine bleach is defined by two practical factors: how concentrated the solution is and how long it stays on the surface. Those two elements determine what level of disinfection you can achieve, so the classifications are built around concentration and exposure time. Temperature and pH influence how well the disinfectant works, but they aren’t used to classify the solutions. Color has no regulatory bearing on the category. By tying categories to concentration and exposure time, regulators communicate what level of disinfection a given solution can provide and the required contact time for effective use.