Please,is there anybody who knows, by the chemichal point of view,if aluminium t rays have some inconvenience for sheet film development ? I (and everybody) know that stainless steel, glass and plastic are the leaders for that purpose, but t he shelves of domestic goods presently have plenty of aluminium stuff which insp ire me using them in developing tasks. They are of several sizes, shapes and wit h little adaptations can be light proof. Thanks a lot.