Exposures Processor Chemicals

Question 1

Phenidone

Answer 1

Developer
Reducing Agent
Rapidly reduces fine detail shades of gray

Question 2

Hydroquinone

Answer 2

Developer
Reducing Agent
Slowly produces heavy densities

Question 3

Potassium

Answer 3

Developer
Restrainer
Decreases reducing agent activity; antifogging agent

Question 4

Sodium Sulfite

Answer 4

Developer, Fixer
Preservative
Dev: Controls oxidation; buffer agent
Fix: Maintains pH

Question 5

Glutaraldehyde

Answer 5

Developer
Hardener
Hardens emulsion; reduces gelatin swelling

Question 6

Water

Answer 6

Developer, Fixer, Washer
Solvent
Dissolves chemicals

Question 7

Ammonium

Answer 7

Fixer
Clearing agent
Removes undeveloped silver halides from emulsion

Question 8

Acetic Acid

Answer 8

Fixer
Activator
Provides acidic pH; stops reduction

Question 9

Potassium Alum.

Answer 9

Fixer
Hardener
Hardens emulsion