I am unable to find a source for a 1gal 'cubitainer', also known as a 'chemtainer'. It is a collapsible plastic container inside a cardboard box. As you empty the chemistry through the spigot, the container collapses so no air remains inside. I used to purchase them from Porter's Camera and CPM/Delta but I can no longer find them in small quantities. If you know of a source, I would appreciate the information. Thanks in advance.