More or less. He knows there are other chemicals in the process. They're just long, difficult to pronounce ones that he doesn't know for the life of him. What he wouldn't give for a rift to pop out a chemistry book about photography or something.

"No. Just plain containers. It was the look and smell of the stuff that tipped me off to what each one was." And luck played a part as well, honestly. "There are older types of photography that we could fall back on. Simpler stuff to use for processing the film. Buuuuut that would mean figuring out and building a camera, and a lot of experimenting." Which he's not sure he's smart enough for, frankly.