What procedure is recommended after removing a coupon from a rack?

The recommended procedure after removing a coupon from a rack is to air dry it. When a coupon is removed from its environment, typically after being subjected to testing processes, it may still contain moisture or other residues that could affect its integrity and the subsequent analysis. Air drying ensures that the coupon is free from excess moisture, which is crucial for accurate measurement of its properties, such as tensile strength or corrosion resistance.

Air drying also helps to minimize contamination that could occur if the coupon were to be placed in contact with other surfaces or handled improperly. This method is particularly favored because it allows for the gradual evaporation of any residual moisture without risking damage to the coupon's surface or altering its properties. By ensuring that the coupon is completely dried before further testing or analysis, technicians can obtain reliable and consistent results.