What environmental factor can degrade OC spray effectiveness?

• A. Moderate temperatures of 20-25 C
• B. Extreme heat or cold affecting propellant and nozzle performance
• C. Slight humidity
• D. Low wind

Answer: (B)

Extreme temperatures can degrade OC spray effectiveness because they directly affect the device’s propellant and nozzle performance. In very hot conditions, internal pressure rises, which can cause erratic spray patterns, reduced control, or even nozzle failure, lowering range and accuracy. In very cold conditions, propellant pressure drops, making the spray weaker and the pattern less reliable, with a higher chance of clogging or intermittent discharge. Moderate temperatures keep the propellant at stable pressure and the nozzle operating as designed, providing predictable dispersion. Humidity and wind influence where the spray goes after deployment but don’t undermine the mechanism itself as much as extreme temperatures, which is why temperature extremes are the primary degrading factor.