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-- PYRO-SODA DEVELOPER, Ilford ID-1
For Films and Plates
STOCK SOLUTION A
Warm Water (125 F or 52 C) - 750.0 ml
Potassium Metabisulfite - 25.0 grams
Pyrogallic Acid - 100.0 grams
Add cold water to make - 1.0 liter
Ensure that the potassium metabisulfite is dissolved before adding the pyrogallic acid.
STOCK SOLUTION B
Warm Water (125 F or 52 C) - 750.0 ml
Sodium Carbonate (monohydrated) - 44.0 grams
Sodium Sulfite (desiccated) - 50.0 grams
Potassium Bromide - 1.2 grams
Add cold water to make - 1.0 liter
For tray development, mix 1 part A, 10 parts B, 9 parts water. Develop for 2-1/2 to 5
minutes at 68 F (20 C). For tank development mix 1 part A, 5 parts B, 20 parts water.
Develop for 5 to 10 minutes at 68 F (20 C).
-- METOL-HYDROQUINONE DEVELOPER, Ilford ID-2
For Plates and Films
STOCK SOLUTION
Warm Water (125 F or 52 C) - 750.0 ml
Metol - 2.0 grams
Sodium Sulfite (desiccated) - 75.0 grams
Hydroquinone - 8.0 grams
Sodium Carbonate (monohydrated) - 43.0 grams
Potassium Bromide - 2.0 grams
Add cold water to make - 1.0 liter
For Tray Development, dilute 1 part of the above stock solution with 2 parts of
water. Develop 3 to 5 minutes at 68 F (20 C). For Tank Development dilute 1 part of
stock solution with 5 parts of water. Develop 6 to 12 minutes at 68 F (20 C).
Available as an Ilford packed chemical in sizes to make 1 U.S. gallon, 1000 ml, 2.5
liters and 5 liters, metric measure, and 80 ounces, and 1 gallon British Imperial measure.
-- METOL TANK OR TRAY DEVELOPER, Ilford ID-3
For Soft Gradation and Maximum Shadow Details
STOCK SOLUTION A
Warm Water (125 F or 52 C) - 750.0 ml
Metol - 12.0 grams
Sodium Sulfite (desiccated) - 50.0 grams
Add cold water to make - 1.0 liter
STOCK SOLUTION B
Warm Water (125 F or 52 C) - 750.0 ml
Sodium Carbonate (monohydrated) - 87.0 grams
Potassium Bromide - 2.0 grams
Add cold water to make - 1.0 liter
Mix 1 part A, 1 part B, 6 parts water. Develop films and plates approximately 12
minutes in a tray or 5 minutes in a tank, and papers for 1-1/2 to 2 minutes. 1D-3 may be
made up in one solution. The superior keeping properties of the separate solutions make
the two solution formula preferable when consistency of performance is especially
important.
-- AMIDOL DEVELOPER, Ilford ID-9
For Films and Plates
Warm Water (l25 F or 52 C) - 750.0 ml
Sodium Sulfite (desiccated) - 100.0 grams
Amidol - 20.0 grams
Potassium Bromide - 6.0 grams
Add cold water to make - 1.0 liter
This developer has very poor keeping qualities and should be used as soon as possible
after mixing. Develop 6 to 10 minutes at 68 F (20 C).
-- METOL-HYDROQUINONE-BORAX DEVELOPER, Ilford ID-11
For Tank or Tray Use
Warm Water (125 F or 52 C) - 750.0 ml
Metol - 2.0 grams
Sodium Sulfite (desiccated) - 100.0 grams
Hydroquinone - 5.0 grams
Borax - 2.0 grams
Add cold water to make - 1.0 liter
Use full strength. Develop from 5 to 13 minutes at 68 F (20 C).
An Extra-fine grain Developer can be prepared by adding to the above, Ammonium
Chloride at the rate of 40 grams of Ammonium Chloride per liter of prepared Ilford
ID-11 (1 ounce 145 grains per quart). Camera exposures should be doubled and
developing time increased to twice the specified time for ID-11.
Available as an Ilford packed chemical in sizes to make 1 U.S. gallon 570 ml metric
measure, and 8 oz., 1 gallon, 3 gallons and 5 gallons British Imperial Measure.
-- REPLENISHER, Ilford-11R
For Metol-hydroquinone-borax Developer
Warm Water (125 F or 52 C) - 750.0 ml
Metol - 3.0 grams
Hydroquinone - 7.5 grams
Sodium Sulfite (desiccated) - 100.0 grams
Borax - 20.0 grams
Add cold water to make - 1.0 liter
Add the replenisher to the developer tank so as to maintain the level of solution.
Where the tank is in continuous use a quantity of replenisher equal to that of the original
developer may normally be added before the solution is discarded.
Available as an Ilford packed chemical in sizes to make 80 ounces British Imperial
measure, of working strength solution.
-- HIGH CONTRAST DEVELOPER, Ilford ID-13
For Line and Screen Negatives
STOCK SOLUTION A
Warm Water (125 F or 52 C) - 750.0 ml
Hydroquinone - 25.0 grams
Potassium Metabisulfite - 25.0 grams
Potassium Bromide - 25.0 grams
Add cold water to make - 1.0 liter
STOCK SOLUTION B
Sodium Hydroxide - 50.0 grams
*Cold water to make - 1.0 liter
*Caution: A good deal of heat is liberated when dissolving Sodium Hydroxide, and if
warm water is used, it may boil with explosive violence. Use only cold water to dissolve
caustic alkalis.
Mix equal parts of A and B immediately before use. The mixed solution has very
poor keeping qualities and should be discarded immediately after using. With normal
exposures, development is complete in 2-1/2 to 3 minutes.
-- METOL-HYDROQUINONE DEVELOPER, Ilford ID-19
For X-Ray. Aerial and Scientific Films
Warm Water (125 F or 52 C) - 750.0 ml
Metol - 2.3 grams
Sodium Sulfite (desiccated) - 72.0 grams
Hydroquinone - 8.8 grams
Sodium Carbonate (monohydrated) - 56.0 grams
Potassium Bromide - 4.0 grams
Add cold water to make - 1.0 liter
Recommended development times for aerial films at 68 F (20 C) are about 13
minutes in a spool tank or about 8 minutes in an automatic processing machine. For
scientific materials see the instructions issued with the materials concerned.
Available as an Ilford packed chemical in sizes to make 80 ounces, 1 gallon, and 5
gallons, British Imperial measure of working strength solution.
-- REPLENISHER Ilford, ID-19R
For ID-19 Metol-hydroquinone Developer
Warm Water (125 F or 52 C) - 750.0 ml
Metol - 4.0 grams
Sodium Sulfite (desiccated) - 72.0 grams
Hydroquinone - 16.0 grams
Sodium Carbonate (monohydrated) - 56.0 grams
Sodium Hydroxide - 7.5 grams
Add cold water to make - 1.0 liter
Add the replenisher to the developer tank so as to maintain the level of solution.
Where the tank is in continuous use, a quantity of replenisher equal to that of the
original developer may normally be added before the solution is discarded.
Available as an Ilford packed chemical in sizes to make 1 gallon. In two 80 ounce
units British Imperial measure of working strength solution.
-- METOL-HYDROQUINONE DEVELOPER, Ilford ID-20
For Bromide Paper
STOCK SOLUTION
Warm Water (125 F or 52 C) - 750.0 ml
Metol . - 1.5 grams
Sodium Sulfite (desiccated) - 25.0 grams
Hydroquinone - 6.0 grams
Sodium Carbonate (monohydrated) - 35.0 grams
Potassium Bromide - 2.0 grams
Add cold water to make - 1.0 liter
For use, dilute 1 part of stock solution with 1 part of water. With Bromide paper
this developer gives good neutral blacks. Developing time is 1-1/2 to 2 minutes for
normal exposures.
-- AMIDOL DEVELOPER, Ilford ID-22
For Bromide Papers
Warm Water (125 F or 52 C) - 750.0 ml
Sodium Sulfite (desiccated) - 25.0 grams
Amidol - 6.0 grams
Potassium Bromide (10% solution) - 8.0 ml
Add cold water to make - 1.0 liter
Use full strength. Develop about 2 minutes. This developer should be freshly made
just before using, and should be discarded after use. It does not keep in stock solution
form.
-- AMIDOL DEVELOPER, Ilford ID-30
For Contact Papers
Warm Water (l25 F or 52 C) - 750.0 ml
Sodium Sulfite (desiccated) - 25.0 grams
Amidol - 6.0 grams
Potassium Bromide (10% solution) - 2.0 ml
Add cold water to make - 1.0 liters
This developer does not keep; it should be made up just before use and discarded
immediately after using. Develop contact papers 45 to 60 seconds.
-- METOL-HYDROOUINONE DEVELOPER, Ilford ID-33
For Oscillograph Films and Papers
Warm Water (l25 F or 52 C) - 750.0 ml
Metol - 5.0 grams
Sodium Sulfite (desiccated) - 50.0 grams
Hydroquinone - 8.0 grams
Sodium Carbonate (monohydrated) - 43.3 grams
Potassium Bromide - 5.0 grams
Add cold water to make - 1.0 liter
Use full strength. Develop about 5 minutes.
-- METOL-HYDROQUINONE DEVELOPER, Ilford ID-36
For Films. Plates and Papers
Warm Water (l25 F or 52 C) - 750.0 ml
Metol - 1.5 grams
Sodium Sulfite (desiccated) - 25.0 grams
Hydroquinone - 6.3 grams
Sodium Carbonate (monohydrated) - 40.5 grams
Potassium Bromide - 0.4 grams
Add cold water to make - 1.0 liter
For contact papers, use full strength; develop 45 to 60 seconds.
For enlarging papers, use 1 part ID-36 and 1 part water and develop for 1-1/2 to 2
minutes.
For tray development of films and plates, take 1 part of ID-36 and 1 part of water;
develop 3 to 5 minutes.
For tank development of films and plates, use 1 part of 1D-36 and 3 parts of water;
develop 6 to 10 minutes.
-- GLYCIN DEVELOPER, Ilford ID-60
For Films and Plates
Warm Water (l25 F or 52 C) - 750.00 ml
Sodium Sulfite (desiccated) - 20.0 grams
Potassium Carbonate - 60.0 grams
Glycin - 30.0 grams
Add cold water to make - 1.0 liter
Dilute 1:7 and develop for about 12 minutes in a tray or 15 minutes in a tank at 68 F (20 C).
-- PHENIDONE-HYDROQUINONE DEVELOPER, Ilford ID-62
For Films and Plates
STOCK SOLUTION
Warm Water (125 F or 52C) - 750.0 ml
Sodium Sulfite (anhydrous) - 50.0 grams
Hydroquinone - 12.0 grams
Sodium Carbonate (desiccated) - 60.0 grams
Phenidone - 0.5 grams
Potassium Bromide - 2.0 grams
Benzotriazole - 0.2 grams
Add cold water to make - 1.0 liter
For use with contact papers, dilute 1:1 and develop 45 to 60 seconds.
For use with enlarging papers, dilute 1:3 and develop 1-1/2 to 2 minutes.
For tray development of films and plates, dilute 1:3 and develop 2 to 4 minutes.
For tank development, dilute 1:7 and develop for 4 to 8 minutes.
-- PHENIDONE-HYDROQUINONE DEVELOPER, Ilford ID-67
For Films and Plates
STOCK SOLUTION
Warm Water (l25 F or 52 C) - 750.0 ml
Sodium Sulfite (anhydrous) - 75.0 grams
Hydroquinone - 8.0 grams
Sodium Carbonate (desiccated) - 37.5 grams
Phenidone - 0.25 grams
Potassium Bromide - 2.0 grams
Benzotriazole - 0.15 grams
Add cold water to make - 1.0 liter
For tray development, dilute 1:2 and develop 2-1/2 to 5 minutes.
For tank development, dilute 1:5 and develop 5 to 10 minutes.
This developer has characteristics approximating those of Ilford ID-2.
-- PHENIDONE-HVDROQUINONE-BORAX FINE GRAIN DEVELOPER, Ilford ID-68
For Films and Plates
Warm Water (125 F or 52C) - 750.0 ml
Sodium Sulfite (desiccated) -85.0 grams
Hydroquinone - 5.0 grams
Borax 7.0 - grams
Boric Acid - 2.0 grams
Potassium Bromide - 1.0 grams
Phenidone - 0.13 grams
Add cold water to make - 1.0 liter
Use undiluted develop films for 8-10 minutes plates for 6-7 minutes at 68 F (30 C)
-- REPLENISHER, Ilford ID-68R
For ID-68 Phenidone-hydroquinone-borax Developer
Warm Water (125 F or 52 C) - 750.0 ml
Sodium Sulfite (desiccated) - 85.0 grams
Hydroquinone - 8.0 grams
Borax - 7.0 grams
Phenidone - 0.22 grams
Add cold water to make - 1.0 liter
Add the Replenisher to the developer tank so as to maintain the level of solution.
Where the tank is in continuous use a quantity of replenisher equal to that of the original
developer may normally be added before the solution is discarded.
-- WARM TONE DEVELOPER, Ilford ID-78
For Ilford Kenprint Paper and Contact Lantern Plates
Warm Water (125 F or 52 C) - 750.0 ml
Sodium Sulfite, desiccated - 50.0 grams
Hydroquinone - 12.0 grams
Sodium Carbonate, desiccated - 62.0 grams
Phenidone - 0.5 grams
Potassium Bromide - 0.4 grams
Add cold water to make - 1.0 liter
Dilute 1 part of the above stock solution with one part of water and develop for 1
minute at 68 F (20 C). For longer development times, dilute 1 part of stock solution
with 3 parts of water and develop for 2 minutes at 68 F (20 C).
-- ACID FIXING BATH, Ilford IF-2
For Films, Plates and Papers
Sodium Thiosulfate - 200.0 grams
Potassium Metabisulfite - 12.5 grams
Add cold water to make - 1.0 liter
For films and plates: use undiluted and fix for 10 to 20 minutes.
For papers: dilute with an equal volume of water and fix for 5 to 10 minutes.
For more rapid fixing the quantities of hypo and metabisulfite may be doubled.
-- ACID HARDENING FIXING BATH, Ilford IF-9
For X-Ray Materials and Films and Plates
Chrome Alum - 12.5 grams
Sodium Metabisulfite - 12.5 grams
Sodium Sulfite (desiccated) - 6.25 grams
Sodium Thiosulfate (Hypo) - 400.0 grams
Add cold water to make - 1.0 liter
Dissolve the chrome alum, metabisulfite and sulfite in 750ml of warm water not
above 100 F (38 C). Then add and dissolve the hypo. Finally add cold water to make
1000ml.
-- ACID HARDENING FIXING BATH, Ilford IF-13
For Contact and Enlarging Papers
STOCK HARDENING SOLUTION
Sodium Sulfite (desiccated) - 50.0 grams
Acetic Acid 99% (Glacial) - 75.0 ml
Potassium Alum - 100.0 grams
Add cold water to make - 1.0 liter
Dissolve the Sulfite in 8 ounces of warm water, allow to cool and add the acetic acid
slowly, stirring all the time. Dissolve the alum in 20 ounces of hot water, allow to cool,
and add to the acid-sulfite mixture. Make up to the final quantity with cold water.
WORKING SOLUTION
Sodium Thiosulfate (Hypo) - 200.0 grams
Stock Hardening Solution - 125.0 grams
Add cold water to make - 1.0 liter
All mixing must be done at a temperature below 70 F (21 C).
-- ACID HARDENING FIXING BATH, Ilford IF-15
For Films and Plates
SOLUTION A
Warm Water (125 F or 52 C) - 500.0 ml
Sodium Thiosulfite (Hypo) - 320.0 grams
Sodium Sulfite (desiccated) - 30.0 grams
SOLUTION B
Warm Water (125 F or 52 C) - 150.0 ml
Boric Acid crystals - 10.0 grams
Acetic Acid 99% (Glacial) - 18.0 ml
Potassium Alum crystals - 25.0 grams
Dissolve the hypo in hot water, and when cool add the sulfite. Dissolve the boric
acid, acetic acid, and alum in hot water. When both solutions are cold, slowly pour
Solution B into Solution A, then add cold water to make 32 ounces or 1 Liter
respectively.
-- FARMER'S REDUCER, Ilford IR-1
For Films and Plates
SOLUTION A
Sodium Thiosulfate - 200.0 grams
Water to make - 1.0 liter
SOLUTION B
Potassium Ferricyanide - 100.0 grams
Cold water to make - 1.0 liter
To use, take a sufficient amount of Solution A to cover the negative and add just
enough of solution B to color the solution a pale yellow. Energy of reduction is propertional
to the amount of Solution B used, and the process should be closely watched. When
sufficient reduction is attained, wash thoroughly and dry in the normal manner.
-- PERSULFATE REDUCER, Ilford IR-2
For Films and Plates
Ammonium Persulfate - 25.0 grams
Cold water to make - 1.0 liter
It is important that the water be free from dissolved chlorides; distilled water is
preferable. One or two drops of sulfuric acid should be added to the mixed solution to
insure consistent action. Remove the negative from the reducer just before reduction is
complete and rinse with a 5% solution of Sodium Sulfite to stop the action, then wash
thoroughly.
-- PROPORTIONAL REDUCER, Ilford IR-3
For Films and Plates
SOLUTION A
Warm Water (125 F or 52 C) - 750.0 ml
Potassium Permanganate - 0.25 grams
Sulfuric Acid (conc.) - 1.5 ml
Add cold water to make - 1.0 liter
SOLUTION B
Ammonium Persulfate - 25.0 grams
Cold water to make - 1.0 liter
Caution: Always add the acid to the water, never water to acid.
For use mix one part of Solution A with 3 parts of Solution B. When reduction has
gone far enough, pour-off the reducer and flood the negative with a 1 % solution of
Sodium Bisulfite to clear it.
-- IODINE-CYANIDE REDUCER, Ilford IR-5
For Films, Plates and Papers
STOCK IODINE SOLUTION
Warm Water (125 F or 52 C) - 750.0 ml
Potassium Iodide - 25.0 grams
Iodine Crystals - 4.0 grams
Add cold water to make - 1.0 liter
STOCK CYANIDE SOLUTION
*Potassium Cyanide - 8.0 grams
Add cold water to make - 1.0 liter
*Caution: Potassium Cyanide is a dangerous poison; it must be used only in a well
ventilated room. Avoid breathing its fumes; do not discard cyanide solutions in a sink
which may contain acid.
For use, take 1 ounce of each stock solution and add water to the mixed solutions to
make 20 ounces (or take 25ml of each solution and add water to make 500ml of
working bath).
-- DEVELOPER STAIN REMOVER
For Films and Plates
Warm Water (125 F or 52 C) - 750.0 ml
Potassium Permanganate - 6.0 grams
Sodium Chloride - 13.0 grams
Acetic Acid 99% (Glacial) - 50.0 ml
Add cold water to make - 1.0 liter
Immerse for 10 minutes with constant rocking, rinse and place in a 5% solution of
potassium metabisulfite until the brown stain is completely discharged. Redevelop in any
ordinary developer, such as Ilford 1D-36, and wash thoroughly.
NOTE: This bleach has a tendency to soften the gelatin and the negative should first
be hardened in a 1% Chrome Alum solution for 3 to 5 minutes and rinsed before
bleaching.
-- DEVELOPER STAIN REMOVER
For Bromide Prints
Potassium Alum, Saturated Solution - 250.0 ml
Hydrochloric Acid, concentrated - 6.0 ml
Wash print thoroughly after treatment.
-- MERCURIC CHLORIDE INTENSIFIER, Ilford I.In-1
BLEACHING SOLUTION
Warm Water (125 F or 52 C) - 750.0 ml
Mercuric Chloride - 25.0 grams
Ammonium Chloride - 25.0 grams
Add cold water to make - 1.0 liter
The negative must be thoroughly washed before being placed in the above bleaching
solution; if it is not perfectly free from hypo, irremovable stains may result.
Bleach until the image is white throughout. Wash well in running water and blacken
in one of the following:
a)1 part of ammonia sp. gr. .800 to 100 parts of water. This gives the most
intensification, but the intensified image is not permanent.
b) Any standard developer, such as Ilford ID-36. This gives somewhat less
intensification, but the process may be repeated, if more density is required.
c) A 20% solution of Sodium Sulfite.
Wash thoroughly after blackening by any of the above methods.
-- MERCURIC IODIDE INTENSIFIER, Ilford I.In-2
Warm Water (125 F or 52 C) - 750.0 ml
Mercuric Iodide - 10.0 grams
Sodium Sulfite (desiccated) - 100.0 grams
Add cold water to make - 1.0 liter
Dissolve the Sodium Sulfite in the water first, then add the Mercuric Iodide. To
ensure permanence, the negative after intensification is washed and developed with any
plate developer, such as Ilford ID-36, for a few minutes. It is then washed thoroughly
and dried in the normal manner.
-- CHROMIUM INTENSIFIER, Ilford I.In-3
BICHROMATE STOCK SOLUTION
Potassium Bichromate - 100.0 grams
Water to make - 1.0 liter
This solution keeps indefinitely.
BLEACHING SOLUTION A
Bichromate stock solution - 100.0 ml
Hydrochloric Acid (conc.) - 2.4 ml
Cold water to make - 1.0 liter
BLEACHING SOLUTION B
Bichromate stock solution 100.0 ml
Hydrochloric Acid (conc. ) 12.0 ml
Water to make 1.0 liter
The bleaching solution should be freshly made. Solution A gives more intensification
than Solution B. Immerse the washed negative into either of these solutions until it is
entirely bleached, wash until the yellow stain is completely removed, and redevelop in
strong artificial light or subdued daylight (NOT direct sunlight, which will cause stains!)
with any negative developer such as Ilford ID-36. Wash thoroughly.
-- MONCKHOVEN'S INTENSIFIER, Ilford I.In-4
BLEACHING SOLUTION
Mercuric Chloride (corrosive sublimate) - 25.0 grams
Potassium Bromide - 25.0 grams
Add cold water to make - 1.0 liter
DARKENING SOLUTION
Potassium Cyanide - 14.0 grams
Silver Nitrate - 22.0 grams
Add cold water to make - 1.0 liter
Dissolve the cyanide and silver nitrate in separate quantities of water and gradually
add the silver nitrate solution to the cyanide, with constant stirring, until a permanent
precipitate is just produced. Allow the mixture to stand for a short time and then filter
it. After thoroughly washing the negative, immerse it in the bleaching solution until the
image is white throughout. Wash it in running water for 20 minutes and then immerse it
in the darkening solution until it has blackened. Wash the negative thoroughly before
drying. If, after intensification, the negative is too dense it can be reduced with a 5%
solution of hypo.
Caution-Mercuric Iodide is a poison. Potassium Cyanide is a very strong poison and
must be handled with extreme care.
-- URANIUM INTENSIFIER, Ilford I.In-5
STOCK SOLUTION A
Uranium Nitrate - 22.0 grams
Water to make - 1.0 liter
STOCK SOLUTION B
Potassium Ferricyanide - 22.0 grams
Water to make - 1.0 liter
The intensifier is prepared for use by mixing Solution A, 4 parts; Solution B, 4 parts;
Acetic Acid 99% (glacial), 1 part. After treatment the negative is washed in several
changes of water acidulated with a few drops of glacial acetic add. The intensification
can be removed by washing in a weak solution of sodium carbonate, and is, in any case,
of limited permanence.
-- SULFIDE TONER, Ilford IT-1
For Bromide and Multigrade Papers
STOCK FERRICYANIDE SOLUTION
Warm Water (125 F or 52 C) - 750.0 ml
Potassium Ferricyanide - 100.0 grams
Potassium Bromide - 100.0 grams
Add cold water to make - 1.0 liter
For use, dilute 1 part of the above stock solution with 9 parts of water.
STOCK SULFIDE SOLUTION
Sodium Sulfide - 50.0 grams
Cold water to make - 1.0 liter
For use, dilute 1 part of the above stock solution with 9 parts of water.
Prints which have been correctly exposed and fully developed produce the best tones.
After the print has been fixed and thoroughly washed, immerse in the diluted
ferricyanide solution until it is completely bleached. Then wash for about 10 minutes
and place in the sulfide solution, where it will redevelop to a rich sepia color. Warmer
tones can be produced by reducing the potassium bromide in the above formula to 1/4
of the amount given. Wash the print thoroughly after toning.
-- HYPO ALUM TONER, Ilford IT-2
Hot water - 1.0 liter
Sodium Thiosulfate - 150.0 grams
Dissolve and then add, a little at a time:
Potassium Alum - 25.0 grams
Until ripened, this bath has a reducing action on prints; ripening is best done by
immersing some spoiled prints, or by adding about 0.12 gram of silver
nitrate, which has previously been dissolved in a small amount of water, to which is
added, drop by drop, sufficient strong ammonia to form and then redissolve the
precipitate formed.
This bath lasts for years, and improves with keeping; it should be kept up to level by
addition of fresh solution.
The prints, which should be developed a little further than for black-and-white, are
toned at about 120 F (50 C) for about 10 minutes. A lower temperature is not
recommended as toning is unduly prolonged ; higher temperatures give colder tones.
Finally, wash the prints thoroughly and swab with a tuft of cotton before drying.
Warmer tones can be obtained by adding 1 gram of potassium iodide to
each liter of the toner.
-- SELENIUM TONER, Ilford IT-3
For Purple to Reddish Brown tones on Papers
STOCK BLEACHING SOLUTION
Potassium Ferricyanide - 100.0 grams
Potassium Bromide - 100.0 grams
Add cold water to make - 1.0 liter
For use dilute 1 part with 9 parts of water.
SELENIUM-SULFIDE STOCK SOLUTION
Sodium Sulfide - 104.0 grams
Selenium Powder - 6.8 grams
Add cold water to make - 1.0 liter
Dissolve the sulfide and warm the solution before adding the selenium; continue
heating until the latter is completely dissolved.
For use dilute 1 part with 10 parts of water.
Tone the prints for 2 to 3 minutes keeping them moving in the bath. Wash the prints
thoroughly before drying.
-- GOLD TONER, Ilford IT-4
For Red Tones on Papers
Warm Water (125 F or 52 C) - 750.0 ml
Ammonium Thiocyanate - 20.0 grams
Gold Chloride - 1.0 grams
Add cold water to make - 1.0 liter
Prints are first toned in the Sulfide or Hypo-Alum toners, then in the above toning
bath, where the sepia tone will change to reddish brown and then to red. The
approximate time of toning is 10 minutes for a red tone. The prints are then refixed in a
10% solution of Sodium Thiosulfate (Hypo) for 5 to 10 minutes, and finally washed
thoroughly in running water.
-- GOLD-THIOCARBAMIDE TONER, Ilford IT-5
For Blue tones on Papers
STOCK SOLUTION A
Thiocarbamide - 14.0 grams
Water to make - 1.0 liter
STOCK SOLUTION B
Citric Acid Crystals - 14.0 grams
Water to make - 1.0 liter
STOCK SOLUTION C
Gold Chloride - 6.0 grams
Water to make - 1.0 liter
For use, take 1 part Solution A, 1 part Solution B, 1 part Solution C, and 10 parts of
water. Prints on Bromide paper should be toned from 15 to 30 minutes, according
to tone required. Keep prints moving during toning and wash thoroughly after the
desired tone is reached.
-- FERRICYANIDE-IRON TONER, Ilford IT-6
For Blue tones on Bromide Papers
SOLUTION A
Warm Water (125 F or 52 C) - 750.0 ml
Potassium Ferricyanide - 2.0 grams
Sulfuric Acid (conc.) - 4.0 ml
Add cold water to make - 1.0 liter
STOCK SOLUTION B
Warm Water (125 F or 52 C) - 750.0 ml
Ferric Ammonium Citrate - 2.0 grams
Sulfuric Acid (conc.) - 4.0 ml
Add cold water to make - 1.0 liter
CAUTION: Always add the acid to the water, slowly, while stirring. NEVER add water
to the acid, which may boil violently.
For use, mix equal parts of each solution just before use. The prints, which should be
slightly lighter than normal, must be thoroughly washed before toning. They are then
immersed in the toning solution until the desired tone is reached. They are then washed
until the yellow stain is removed from the whites. If the wash water is alkaline, some
bleaching of the image may take place; this may be prevented by washing the toned
prints in several changes of water, each slightly acidified with a few drops of sulfuric or
acetic acid.