Iffin ye cant dedicate the few basic fomulas (air sample, t1/2, shielding,stay time, etc.)that are on every version of every RPT test known to man to the permanently installed calculator, then perhaps the calculated removal of radioactive contamination from places where it is unwanted is better suited for you - even in the current era of redefining just what is a senior tech. Retirement be all its supposed to be.