WARNING: the following procedure is crucial. Make sure you read the instructions first! The FEP film consists of three layers. Two layers are for the protection of the middle layer, which is the actual FEP film.
⬢Separate all layers slightly apart to recognise them:
⬢Semi-thick outer layer (protection)
⬢Thick inner layer (FEP film)
⬢Thin outer layer (protection)
⬢FIRST, remove completely the SEMI-THICK outer layer. Make sure all the circular holes are free of the remains of the film.
⬢Only after you have successfully removed the thick layer and the "circular" remains, remove the THIN outer layer.
⬢You should end up with the middle layer, which is without both outer layers. Also, double-check you have removed all the remains.