chemicals and their functions
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8 Terms
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Phenidone
Reducing agent, produces shades of gray rapidly.
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Hydroquinone
Reducing agent, produces black tones slowly.
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Sodium carbonate
Helps swell gelatin, produces alkalinity, controls pH.
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Potassium bromide
Anti-fog agent, protects unexposed crystals from chemical attack.
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Sodium sulfide
Controls oxidation, maintains balance among developer components.
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Glutaraldehyde
Controls emulsion swelling, increases archival quality.
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Chelates
Removes metallic impurities, stabilizes developing agent.
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Water
Dissolves chemical for use.
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