Agfa/Ansco 130 is a classic warm-black paper developer for silver gelatin fiber prints, contact prints, and a good general purpose paper developer for any type of silver gelatin paper.
Plain-English Summary
Agfa/Ansco 130 is a glycin-based paper developer for silver gelatin printing. It combines Metol, hydroquinone, and glycin in an alkaline carbonate solution. The result is an active developer with good blacks, useful midtone separation, warm-black image color, and unusually good working life compared with many standard paper developers.
This is not just a soft warm-tone formula. It has enough hydroquinone and carbonate to act like a serious print developer. Think of it as a full-strength paper developer with added warmth, long tray usefulness, and a little more personality than a plain MQ developer.
Best Use Case
Use Agfa/Ansco 130 when you want a dependable developer for fiber silver gelatin prints, contact prints, warm-tone papers, and long printing sessions. It is a strong choice when the final print needs solid blacks, clean highlights, and a print color that leans warmer than a neutral developer.
For silver gelatin paper negatives, treat it as a testing developer rather than the default choice. At normal strength it may build too much contrast for many paper-negative workflows. Start diluted, test tray time carefully, and judge the dried negative under the actual contact-printing light you plan to use.
Formula
Stock solution to make 1 liter.
| Ingredient | Amount | Unit | Function | Practical note |
|---|---|---|---|---|
| Warm water, about 52°C / 125°F | 750 | mL | Solvent | Use warm water to help dissolve the dry chemicals. Distilled water is preferred for stock. |
| Metol | 2.2 | g | Primary developing agent | Dissolve early. Too much sulfite in the water before Metol can slow or prevent clean dissolving. |
| Sodium sulfite, anhydrous | 50 | g | Preservative and oxygen scavenger | Protects the developing agents from rapid oxidation. Add only a small pinch before Metol, then add the rest after Metol dissolves. |
| Hydroquinone | 11 | g | Developing agent and contrast builder | Works strongly in alkaline solution and helps produce density and contrast. |
| Sodium carbonate, monohydrate | 78 | g | Alkali / accelerator | Raises pH and activates the developer. If using anhydrous carbonate, use a lower weight and keep tests consistent. |
| Potassium bromide | 5.5 | g | Restrainer / anti-fog agent | Controls fog and helps keep highlights clean. More bromide can slow action and may shift tone warmer. |
| Glycin | 11 | g | Slow developing agent and warm-tone contributor | Use fresh material. Old glycin can lose activity and change behavior. |
| Cold water to make | 1000 | mL | Final volume adjustment | Top up after all chemicals are dissolved and the solution has cooled enough to handle safely. |
Carbonate note: the published formula calls for sodium carbonate monohydrate. If you use anhydrous sodium carbonate, use less by weight and keep that choice consistent across all tests. A practical starting range is roughly 65-67 g per liter, but exact behavior can vary with chemical form and purity.
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What Each Chemical Does
Metol
Metol is the fast-starting developing agent. It helps bring up the image smoothly and supports useful lower-value and midtone detail. In this formula it works with hydroquinone and glycin rather than carrying the whole developer by itself.
Sodium Sulfite
Sodium sulfite protects the developing agents from fast oxidation. It also helps the stock solution keep better over time. In mixing, only a small pinch should go in before the Metol. The rest goes in after the Metol has dissolved.
Hydroquinone
Hydroquinone builds density and contrast, especially in an alkaline developer. It helps give the formula enough strength to make full, rich prints rather than acting like a very soft warm-tone developer.
Sodium Carbonate
Sodium carbonate is the alkali. It raises the pH so the developing agents can work with enough energy. This is one reason 130 is more active than many soft-working warm-tone formulas.
Potassium Bromide
Potassium bromide restrains development of unexposed or lightly exposed silver halide. In practical terms, it helps control fog and keeps highlights from getting dirty. More bromide can slow the developer and may push the image tone warmer, but it should be tested rather than assumed.
Glycin
Glycin is the key ingredient that separates this formula from ordinary Metol-hydroquinone paper developers. It is slower and more long-lived in solution than many common developing agents. In paper developers, it is valued for warm-black image color, long tray usefulness, and smooth tonal behavior.
How the Formula Works Chemically
A silver gelatin paper image starts with exposed silver halide crystals in the emulsion. Developer reduces the exposed silver halide to metallic silver. More exposed areas reduce faster and build more density. Less exposed areas reduce more slowly, and unexposed areas should remain mostly undeveloped until the print is fixed.
Agfa/Ansco 130 uses three developing agents. Metol starts the image quickly. Hydroquinone strengthens density and contrast in the alkaline solution. Glycin adds slower, steadier activity and contributes to the warmer visual character of the print. Sodium sulfite slows oxidation, sodium carbonate supplies the alkaline working environment, and potassium bromide restrains fog.
The practical result is a developer that can produce full blacks without feeling harsh when exposure, paper grade, dilution, and tray time are controlled. It is still a strong developer, so the final look depends heavily on paper choice and working method.
Mixing Order and Handling
- Start with 750 mL of warm water at about 52°C / 125°F.
- Add a small pinch of the sodium sulfite and stir.
- Add the Metol and stir until it is fully dissolved.
- Add the rest of the sodium sulfite and dissolve completely.
- Add the hydroquinone and dissolve completely.
- Add the sodium carbonate and dissolve completely.
- Add the potassium bromide and dissolve completely.
- Add the glycin and stir until dissolved. Glycin may take patience.
- Add cold water to make 1 liter total volume.
- Bottle the stock solution in a clearly labeled, tightly sealed container.
Do not rush the mixing order. Metol can be harder to dissolve once the solution already contains a heavy load of dissolved salts. Dissolve each ingredient before adding the next one. Use clean graduates, a dedicated stirring rod, and containers reserved for photographic chemistry.
Working Dilution and Use
Normal working dilution is 1+1: one part stock solution plus one part water. Use stock solution when you need more activity and contrast. Use 1+2 when you want a softer, more controlled developer. Weaker dilutions can be tested, but they should not be treated as standard until proven with your paper.
Work at 20°C / 68°F as the baseline. A practical starting test window is 60-120 seconds at 1+1. Some instructions suggest shorter times, while other formula references suggest about 2 minutes. The safest way to standardize this formula is to pick a paper, make a proper exposure test, and evaluate dry prints instead of trusting one universal tray time.
For final prints, avoid using early removal from the developer as your main contrast-control tool. Control contrast with exposure, paper grade or filtration, dilution, and repeatable development time. Pulling prints early can give weak blacks and unstable-looking results.
The stock solution is known for long keeping life when stored well. The working solution can also keep working longer than many common tray developers. Do not judge exhaustion by color alone. The solution may darken with age or use and still remain active. Use a standard test strip or reference negative to confirm performance.
Visual Characteristics
Agfa/Ansco 130 usually gives a warm-black image rather than a cold black. The warmth is most visible on responsive warm-tone and chlorobromide papers. Neutral modern papers may show a smaller shift, but the developer can still give a different feel from a plain MQ developer.
Expect strong blacks, good midtone separation, and a print color that can feel less sterile than a neutral developer. Fiber papers usually show these differences more clearly than RC papers. Matte and textured fiber surfaces may show the tonal character in a quieter way than glossy papers.
This formula is not magic. Poor exposure, wrong contrast grade, old paper, contaminated trays, or weak chemistry will still produce poor prints. Its value is consistency, warmth, and depth when the rest of the print workflow is under control.
Comparison to Related Formulas
| Formula type | Developing agents | Likely print character | Best use |
|---|---|---|---|
| Agfa/Ansco 130 | Metol + hydroquinone + glycin | Warm-black to slightly warm; normal working contrast | Final fiber prints, contact prints, long tray sessions |
| D-72 / Dektol-type developers | Metol + hydroquinone | Neutral to slightly cool; energetic and direct | General-purpose enlarging and proofing |
| Soft glycin developers | Glycin-heavy or glycin-centered | Warmer and softer; less snap | Softening contrast or two-tray work |
| Amidol paper developers | Amidol-based | Very direct, rich image color; shorter working life and different handling | High-end contact printing and specialty papers |
The main point is simple: 130 sits between ordinary neutral MQ print developers and softer warm-tone formulas. It gives more warmth and tray life than many standard developers, but it still has enough activity for serious final printing.
Safety Notes with SDS Reminder
This formula uses dry chemicals that deserve careful handling. Wear gloves, splash goggles, and a dust mask or respirator appropriate for dry chemical mixing. Work with good ventilation. Avoid breathing dust. Keep chemistry away from food, drinks, children, pets, and household containers.
Metol and hydroquinone can cause skin sensitization in some people. Hydroquinone has stronger hazard warnings than many ordinary darkroom chemicals and should be handled with extra care. Sodium carbonate can irritate eyes. Glycin, sodium sulfite, and potassium bromide also require normal laboratory-style handling. Used developer and mixed chemical waste should be handled according to local rules.
These notes are not a substitute for current SDS documents. Always read the current SDS for the exact chemicals you purchase, because hazard classification, concentration, supplier, and regulatory language can change.
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