"Hypo" is a synonym for chemical fixer used in black and white film and paper development. The full chemical name is Sodium Thiosulfate or ammonium thiosulfate. It is a fixing bath that makes the image "permanent". It was also the name of John Wesley Powell's fat donkey when he became one of the famous American survey photographers.
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Hfrl commented on the word Hypo
"Hypo" is a synonym for chemical fixer used in black and white film and paper development. The full chemical name is Sodium Thiosulfate or ammonium thiosulfate. It is a fixing bath that makes the image "permanent". It was also the name of John Wesley Powell's fat donkey when he became one of the famous American survey photographers.
July 7, 2009