All radioactive licenses released by regulatory firms have a requirement for you to do a leakage or wipe examination on your gauges. This test generally takes much less than 5 mins per gauge and also it generally includes wiping a little piece of filter paper throughout locations near the locations of the sources in the scale. Although the likelihood is extremely remote, these examinations are made to grab any type of outside contamination that may have made its means outside of the dual encapsulated seals that hold the contaminated product. ©