What type of alcohol is specified for use in roller meters?

What type of alcohol is specified for use in roller meters?

• A. 50% isopropyl
• B. 70% isopropyl
• C. 90% isopropyl
• D. Ethanol

Answer: (B)

The specified type of alcohol for use in roller meters is typically 70% isopropyl alcohol. This concentration is effective because it strikes a balance between sufficient alcohol content to disinfect and clean surfaces while also allowing for better evaporation rates, which can prevent damage to sensitive components in a roller meter. A solution with too high an alcohol concentration, such as 90% isopropyl, may evaporate too quickly and not allow enough contact time for effective cleaning, while a lower concentration like 50% may not be effective enough as a disinfectant. Ethanol is also used for some cleaning applications but is less commonly specified for roller meters compared to isopropyl alcohol at the 70% concentration.

The specified type of alcohol for use in roller meters is typically 70% isopropyl alcohol. This concentration is effective because it strikes a balance between sufficient alcohol content to disinfect and clean surfaces while also allowing for better evaporation rates, which can prevent damage to sensitive components in a roller meter. A solution with too high an alcohol concentration, such as 90% isopropyl, may evaporate too quickly and not allow enough contact time for effective cleaning, while a lower concentration like 50% may not be effective enough as a disinfectant. Ethanol is also used for some cleaning applications but is less commonly specified for roller meters compared to isopropyl alcohol at the 70% concentration.