Developer and Fixer Components

Question 1

Reducing agent; produces shades of gray rapidly.

Answer 1

Developing Agent - Phenidone/ Metol

Question 2

Reducing agent; produces black tones slowly.

Answer 2

Developing Agent- Hydroquinone

Question 3

helps swell gelatin; produces alkalinity; controls pH

Answer 3

Activator- Sodium Carbonate

Question 4

Anti fog agent; protects unexposed crystals from chemical “attack”. (also potassium iodide)

Answer 4

Restrainer- Potassium Bromide

Question 5

controls oxidation; maintains balance among developer components.

Answer 5

Preservative- Sodium Sulfite

Question 6

controls emulsion swelling and enhances archival quality.

Answer 6

Hardener- Glutaraldehyde

Question 7

Removes metallic impurities; stabilizes developing agent

Answer 7

Sequestering Agent- Chelates

Question 8

Dissolves chemicals for use.

Answer 8

Solvent- Water

Question 9

Neutralize developer and stop its action

Answer 9

Activator- Acetic Acid

Question 10

removes undeveloped silver bromine from the
emulsion.

Answer 10

Fixing Agent/ Clearing Agent/ Hypo/ Thiosulfate- Ammonium Thiosulfate

Question 11

stiffens and shrinks emulsion.

Answer 11

Hardener- Potassium Alum

Question 12

Maintains chemical balance

Answer 12

Preservative - Sodium Sulfite

Question 13

Maintains proper pH

Answer 13

Buffer- Acetate

Question 14

Remove aluminum ions

Answer 14

Sequestering Agent - Boric Acid/ Salt