Re: [Frameworks] Making clear leader

[Ed Inman]

Black and white bleach is typically followed with a clearing solution to remove the stain. The most traditional formula is here: R-9 Bleach  Water: 1 litre  Potassium Dichromate: 9.5 g  Sulfuric Acid (concentrated): 12 ml  (Always add acid to water--never water to acid.)  CB-1 Clearing Bath:  Water: 1 litre  Sodium sulfite: 90 g  ----------------------------------------------------------------- An alternative formula is here: BLEACH Two solutions, A and B are mixed as follows: For solution A add 2g of potassium permanganate to 500ml water. For solution B add 10ml of concentrated sulphuric acid to 490ml water. For use, mix equal parts of A and B, making a fresh working solution for each film, and discard after use. CLEARING SOLUTION Add 25g sodium or potassium metabisulphite to 800ml water. When the sodium or potassium metabisulphite is dissolved make up to 1 litre. ----------------------------- The easier (and less hazardous) way is to simply use conventional fixer on undeveloped black and white film stock. -----Original Message----- From: Nicole Baker Sent: Jul 27, 2020 1:35 AM To: Experimental Film Discussion List Subject: [Frameworks] Making clear leader Hello frameworkers! I am aware that it is possible to bleach developed film (found/unused footage) into clear leader but am not sure how? Could anyone let me know the chemistry required to remove the fixed emulsion? Thanks! Nicole Elaine Baker Peterson MFA in Visual Studies, 2019 Pacific Northwest College of Art Hallie Ford School of Graduate Studies www.magiklantern.com

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