I filled the container about half way using hot water then added about 250 ml of pure lemon juice. left it to stand for a hour. I went back every 10 minutes or so to give it a little shake. After the hours I took the film out and allowed it to dry off for a few hours on the drainer in the kitchen then popped it on the window ledge in the sun for a few weeks to dry out before shooting. If your in a rush take it into a completely blacked out room and use a hair dryer to dry it off.