Selection the type of the labels and the printing method is the key , as you have to make sure the labels quality and orienting method is not affected by sporicidal or IPA 70% which will be used to clean the ingredients before placed in the isolator without affecting the printing.
Using THERMAL PRINTERS and CHEMICAL RESISTANT LABELS FOR THERMAL TRANSFER PRINTERS will help.
As mentioned, the key is the type of label and ink (or thermal). We have been using IPA 70% resistant label/ink for years now inside the isolator after spraying or wiping down. There is an important note too, try to minimize the glove touching to the sticky part of the label because this is the area where antiseptic doesn’t reach to.