Cramer's Pyro-Soda Developer

No. 1. Pyrogallic Acid..................1 oz.

Sulphite of Sodium (Crystals).1 drm. Dissolve the Sulphite of Sodium in 6 oz. Distilled Water and add Acetic Acid until the solution turns blue litmus paper red and then add the Pyro.

No. 2. Water...........................60 oz.

Carbonate of Sodium Crystals (Sal Soda.).....................5 oz.

Sulphite of Sodium Crystals - 10 oz.

To Develop Take

No. 1........................1 drachm.

No. 2............................1 oz.

In Winter add to this 2 oz. tepid water; in Summer add 3 to 5 ozs. of cold water. If the high lights are flat use more of No. 1, and if they are too intense use less, but do not use too little of No. 1 or the alkali will be in excess and cause fog.

Stanley's Metol And Hydrochinon Developer

Metol.......................... 1/4 oz.

Hydrochinon.................. 1/4 oz.

Water..........................80 oz.

Sulphite of Soda (Crystals)___4 oz.

Carbonate of Soda (Crystals)..2 1/2 oz.

Dissolve in the order given. If the above works too energetically dilute with pure water until the desired result is obtained.

Cramer's Metol and Hydrochinon Developer

Metol......................... 1/4 oz.

Hydrochinon.................. 1/4 oz.

Water.........................80 oz.

When thoroughly dissolved, add Sulphite of Soda, Crystals.- 4 oz. Carbonate of Soda Crystals.. 2 1/2 oz.

To prepare above with Hydrometer, mix

20 ozs. Sulphite of Soda Solution, testing 60.

20 ozs. Carbonate of Soda Solution, testing 30.

1/4 oz. Metol, 1/4 oz. Hydrochinon, dissolved in 40 oz. Water.

For summer use, dilute the developer with an equal quantity of water, also for large plates, so that the development does not proceed too rapidly and can be properly controlled. If negatives of less contrast are desired use less Hydrochinon and more Metol.

Hammer's Metol And Pyro Developer

No. 1.

Water........................57 ozs.

Sulphite of Soda (Crystals).. 2 1/2 ozs. Metol......................... 1 oz.

No. 2.

Water........................57 ozs.

Sulphite of Soda (Crystals). 2 1/2 ozs. Pyro.......................... 1/4 oz.

No. 3.

Water..........................57 ozs.

Carbonate Potass.............2 1/2 ozs.

For use. Take 3 ounces of water and 1 ounce each of Nos. 1, 2 and 3. This developer may be used repeatedly by adding a little fresh developer as required.

Keep the used developer in separate bottle.

This developer combines the desirable qualities of Metol and Pyro, and gives an ideal negative.

Carbutt's Hydro-Metol Developer

Water..........................32 ozs.

Hydrochinon..................60 grs.

Metol...........................45 grs.

Sulphite of Soda Crystals......1 1/2 oz.

Bromide of Potash............20 grs.

Carbonate of Soda Crystals.... 1 1/2 oz.

Dissolve in the order named, filter, place in 8 oz. bottles filled to the neck. After using a portion place in a separate bottle, which can be used again by adding a portion of fresh developer.

Seed's Eikonogen=Hydrochinon Developer

No. 1.

Distilled or pure well water---- 32 oz.

Sodium Sulphite (Crystals) ---- 4 oz.

Eikonogen......................240 gr.

Hydrochinon................... 60 gr.

No. 2. Water...........................32 oz.

Carbonate of Potash............ 4 oz.

To Develop Take

No. 1.............................2 oz.

No. 2.............................1 oz.

+Water...........................1 oz.

To prepare the above by Hydrometer test.

Sodium Sulphite Solution to test

30............................. 34 oz.

Eikonogen......................240 gr.

Hydrochinon................... 60 gr.

Carbonate of Potash Solution to test 50.

To Develop Take

No. 1.............................2 oz.

No. 2.............................1 oz.

+Water...........................1 oz.

+For Double-coated Plates use 5 oz. water. More water gives less contrast and density.

Cramer's Metol-Bicarbonate Developer

Metol............................1 oz.

Water............................60 oz.

Thoroughly dissolve and then add

Sulphite of Soda, Crystals.......6 oz.

Bicarbonate of Soda............ 3 oz.

To prepare above with Hydrometer, mix 30 oz. Sulphite of Soda Solution testing 75. 30 oz. Bicarbonate of Soda Solution, testing 50. 1 oz. Metol, dissolved in 12 oz. Water.

This developer has excellent keeping qualities, works very uniform and can be used repeatedly, without difference in the results. The Bicarbonate of Soda being a very mild alkali, it is not liable to injure the film, or fog the plate.

Cramer's Bromo-Hydrochinon Developer

No. 1.

Distilled or Ice Water..........25 oz.

Sulphite of Soda, Crystals...... 3 oz.

Hydrochinon...................1/2 oz.

Bromide of Potassium..........1/4 oz.

Dissolve by warming and let cool before use.

No. 2. Water...........................25 oz.

Carbonate of Soda, Crystals............6 oz.

Mix 1 and.2, equal parts, for use.

Carbutt's Eikonogen and Hydrochinon Developer

Avoirdupois

No. 1. Weight.

Distilled Water................ 20 oz.

Sulphite of Soda Crystals...... 4 oz.

Eikonogen......................330 gr.

Hydrochinon...................160 gr.

Water to make up to........... 32 oz.

Avoirdupois No. 2. Weight.

Distilled Water.................20 oz.

Carbonate of Potash........2 oz.

Carbonate Soda Crystals........2 oz,

Water to make up to............32 oz.