Components of the developer and their function

Question 1

Reduces the exposed silver bromide to metallic silver:

Answer 1

Developing agent

Question 2

Contains potassium bromide:

Answer 2

Restrainer

Question 3

Used as a hardener

Answer 3

Glutaraldehyde

Question 4

Maintains proper pH in the fixer

Answer 4

Buffer

Question 5

Preserves the life of the processing chemicals;

Maintains balance among developer components

Answer 5

Sodium Sulfate

Question 6

Stops the action of the developer

Answer 6

Activator

Question 7

Also called hypo; clearing agent

Answer 7

Ammonium Thiosulfate

Question 8

Removes the unexposed and undeveloped silver bromide crystals

Answer 8

Fixing agent

Question 9

Chemical used as a developing agent;

Produces black tones slowly

Answer 9

Hydroquinone

Question 10

Chemical used as a developing agent;

Develops the gray tones

Answer 10

Phenidone

Question 11

Developing agent

Reducing agent; produces shades of gray rapidly

Answer 11

Phenidone

Question 12

Activator

• Helps swell gelatin
• Produces alkalinity
• Controls pH

Answer 12

Sodium Carbonate

Question 13

Restrainer

• Antifog agent
• Protects unexposed crystals from chemical “attack”

Answer 13

Potassium bromide

Question 14

Preservative

• Controls oxidation
• Maintains balance among developer components

Answer 14

Sodium sulfite

Question 15

Hardener

• Controls emulsion swelling
• Enhances archival quality

Answer 15

Glutaraldehyde

Question 16

Sequestering agent

• Removes metallic impurities
• Stabilizes developing agent

Answer 16

Chelates

Question 17

Solvent

Dissolves chemicals for use

Answer 17

Water

Question 18

Developing agent

Reducing agent; produces black tones slowly

Answer 18

Hydroquinone