Antistatic shielding bags, how do I determine when to discard them?
There are many types of shielding bags some reusable, perhaps the ones you mention, and of course the so call single-use that must be discarded after a return trip to the field. The latter are here recommended as once the bag is discarded you will know that the new one to use will be ok, hence you will save yourself the problem of having to manage their full life spans, particularly if the company is large and short on manpower resources for this “menial” task.