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Photo Engineer · 05-20-2007, 10:41 AM

That was the old cellulose nitate base (explosive) that was eliminated in the 30s when Kodak went to the safety base.

Here you are seeing the cotton being dried before treatment with nitric acid which turned it into cellulose nitrate.

PE

05-20-2007, 10:41 AM	#11 (permalink)
Photo Engineer Join Date: Apr 2005 Location: Rochester, NY Posts: 10,080	That was the old cellulose nitate base (explosive) that was eliminated in the 30s when Kodak went to the safety base. Here you are seeing the cotton being dried before treatment with nitric acid which turned it into cellulose nitrate. PE