We are trying to collect all our dyes and special stain chemicals and hopefully combine some of the chemicals to be hauled away. I know the people hauling the chemicals have the last word on what is mixed but...My question is, does anyone have a list of chemicals you CAN mix? I do not want us to blow up the lab from mixing the wrong chemicals but we do not have a large enough volume to separate everything. You cannot mix ammonical silver with other silvers although I have seen it done. It is potentially explosive. I checked with NSH and they do not have the info. Does anyone know if this type of list exists?