Thank you! I am going to look into the ferlic filter although it's like pulling teeth to get anything for my department. I am the manager for a tiny community hospital and we are getting a new Carestream DR portable that we will probably end up using exclusively ( they are planning to tear out our old tube in the room). This class was great because I will program all the new techniques that I have learned (after testing them and getting the dose as low as possible), effectively getting all techs to change.