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Dye destruction or dye bleach is a photographic printing process, in which dyes embedded in the paper are bleached (destroyed) in processing. [1] Because the dyes are fully formed in the paper prior to processing, they may be formulated with few constraints, compared to the complex dye couplers that must react in chromogenic processing.
How to Clean “Use a couple of small squirts of mild liquid dish soap mixed into warm water and rub gently, then rinse,” recommends Harris. But don’t use too much dish soap thinking it’s ...
The print must then be rinsed in water to removed the fixer. Photographic fixer is a mixture of chemicals used in the final step in the photographic processing of film or paper. The fixer stabilises the image, removing the unexposed silver halide remaining on the photographic film or photographic paper , leaving behind the reduced metallic ...
like HEPA filter, used in various laboratories and clean rooms to produce lamellar air flow Radiation: •Gamma ray source: used in sterilization of heat-labile products like plastic or rubber syringes, catheters and gloves •X-ray source-do- •Infrared light source-do- •Ultraviolet light source-do- Inspissator
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An inter-war bottle of Milton's Fluid, Hunterian Museum, Glasgow. Milton sterilizing fluid is produced by Procter & Gamble for sterilization uses. It contains 1% sodium hypochlorite (NaClO) and 16.5% sodium chloride (NaCl; common salt).
Mixing cleaning products containing bleach or other oxygenates (such as Comet) with products that contain ammonia or acid is dangerous. The P&G Comet SDS specifically warns to: "Avoid contact with acids and ammonia." Despite being labeled as "scratch free", the label for Comet cleanser also advises the use of plenty of water on "delicate surfaces".
Recycled pulp can be bleached with the same chemicals used to bleach virgin pulp, but hydrogen peroxide and sodium hydrosulfite are the most common bleaching agents. Recycled pulp, or paper made from it, is known as PCF (process chlorine free) if no chlorine-containing compounds were used in the recycling process.