What is the acceptable criterion for removable activity in a wipe test?

The acceptable criterion for removable activity in a wipe test is set at 200 disintegrations per minute (dpm) per 100 square centimeters (cm²). This threshold is established based on regulatory guidelines and best practices to ensure that contamination levels are kept within safe limits.

A wipe test is performed to detect and measure radioactive contamination on surfaces. The number 200 dpm per 100 cm² indicates that if wipe test samples return results higher than this value, further action is required to decontaminate the area. This limit is significant because it balances the need for safety with the practical realities of working with radioactive materials in a research or clinical environment. By adhering to this criterion, personnel can help ensure a safe working atmosphere while maintaining compliance with health and safety regulations.