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QAQC > Processing Chemistry > Flashcards

Processing Chemistry Flashcards

1
Q

Developing agents

A

Phenidone
Hydroquinone

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2
Q

Reducing agent; produces shades of gray rapidly

A

Phenidone

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3
Q

Reducing agent; produces black tones slowly

A

Hydroquinone

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4
Q

Helps swell gelatin; produces alkalinity; controls pH

A

Sodium carbonate

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5
Q

Antifog agent; protects unexposed crystals from chemical “attack”

A

Potassium bromide

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6
Q

Controls oxidation; maintains balance among developer components

A

Sodium sulfite

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7
Q

Controls emulsion swelling and enhances archival quality

A

Clutaraldehyde

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8
Q

Removes metallic impurities; stabilizes developing agent

A

Chelates

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9
Q

dissolves chemicals for use

A

Water

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10
Q

Developer

A

Phenidone
Hydroquinone
Sodium Carbonate
Potassium Bromide
Sodium Sulfite
Clutaraldehyde
Chelates
Water

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11
Q

Fixer

A

Acetic Acid
Ammonium thiosulfate
Potassium alum
Sodium sulfite
Acetate
Boric acids and salt
Water

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12
Q

Neutralizes the developer and stops its action

A

Acetic acid

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13
Q

Removes undeveloped silver bromine from emulsion

A

Ammonium thiosulfate

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14
Q
  • Stiffens and shrinks emulsion
A

Potassium alum

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15
Q

Maintains proper PH

A

Acetate

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16
Q
  • Removes aluminum ions
A

Boric acids and Salts

17
Q

Swells the emulsion to permit subsequent chemical penetration

A

Wetting

18
Q

Produces a visible image fron the latent image

A

Developing

19
Q

Terminates development and removes excess chemical from the emulsion

A

Rinsing in stop bath

20
Q

Removes remaining silver halide from emulsion and hardens gelatin

A

Fixing

21
Q

Removes excess chemicals

A

Washing

22
Q

Removes water and prepares radiograph for viewing

A

Drying

QAQC (4 decks)

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