What color are out of calibration tags?

Out of calibration tags are generally color-coded for quick identification, and orange is the standard color used specifically for this purpose. Using orange for these tags helps personnel quickly recognize that a particular piece of equipment is not calibrated and may deliver inaccurate results. The color choice of orange draws attention and prompts immediate action to either recalibrate the equipment or take it out of service until it is determined to be accurate again. This is vital in maintaining safety and accuracy in any engineering or technical environment.

The other colors mentioned, like red, blue, and green, are typically associated with different statuses or categories in various systems, but they do not signify out of calibration. For instance, red might be used for dangerous conditions, blue could indicate equipment that is reserved or in use, and green often represents normal or safe operating conditions. Hence, orange is specifically aligned with the need for caution regarding calibration status.