A simple, classic solution for processing black and white negatives, Film Developer 23 from Photographers' Formulary is similar to Kodak's D-23, and is a metol-based semi-compensating developer. This formula produces negatives with low to medium contrast, is ideal for zone system applications, and can also be used in divided or two-bath compensating development processes with sodium metaborate (Kodalk). When mixed, the working solution has an approximate shelf life of approximately six months, and one liter of solution is sufficient for processing about four rolls of 35mm film. The working solution efficiency can be extended to approximately 25 rolls if replenished with the optional DK-25 Replenisher. This kit contains enough metol and sodium sulfite to make 4 liters of working solution.

B&W Film Developer Kit    Includes Sodium Sulfite and Metol    Semi-Compensating Developer    Produces Low/Medium Contrast Negatives

Related Questions and Answers

Q: 1. How many rolls of 35mm film can be developed with a 1-liter solution?

A: Depending on your tank/reel set up, it might vary slightly. On a Paterson universal, the typical amount of develop you need to submerge a roll of 35mm is 300ml. Assuming this, this would safely develop roughly 3 rolls of film.

Q: 2. The description says D-76 is suitable for push processing. Can I use it to pull film 1 stop?

A: D-76 can be used to pull or push process film. But it is mot designed for that. So, depending on the film it might not give the best results.

Q: 3. what is the shelf life in a full bottle. About how many rolls can be developed?

A: The shelf life would be about 6 months.

Q: 4. Using D-76 to develop Tri-X 400 pushed to asa / iso 1600. How much extra time to develop film? 35mm 36ex

A: Hi Kelly, I made an error. Please use times 10.5 and 7 respectively. Sorry chuck

Q: 5. I'm buying some film and developer - it's been 20 ears since I last developed film, so I'm a bit rusty. For now I'm not looking for some advanced technique, just the basics.1 gallon of developer, how many films will it develop (120 mm)I'll be mixing 1:1. 1 gallon developer 1 gallon water=2 gallons. So is it almost 20 rolls of 120 film per gallon?And developer is single use, but fixer is recyclable, so what is the ratio, how much fixer should I get compared to developer? Like is it 1 gallon fixer to 5 gallons developer? (I'm just picking numbers out of the blue as an example)How many times do you recycle fixer?I don't live in the US so chemistry needs to be as a powder or it will be too expensive to send, and there are regulations on sending fluids. Stop bath I'll just rinse with water or diluted white vinegar, wetting agent I'll use dish soap. So all I need is developer and fixer.But how much per something like 20 rolls of film?

A: Hello, I only use strait D-76 mixed to a gallon. I dev 120 all the time. I can get about 15-20 rolls out of a gallon. But after the first 10 or so, you want to start adding time, like a minute. If negs look a little thin then add more. the best negs come at the end with all the silver thats in the developer. I wouldn't do 1:1. I have always done strait at 68 degrees. 7 min for 400. Pretty sure that certain fluids won't ship. As far as fixer, I re-use mine till its dead. you can start to tell when the negs look purple after 5 min, so I just got a couple min longer....hope this helps

Q: 6. The old D-76 produced a clear solution. When I mixed the new D-76 with water, it produced an opaque dark brown red solution. Is that normal?

A: Unfortunately, Kodak chemistry lately has a brown color to it, whether it is Dektol or D76, Kodak knows about this and are working on it but they say it actually has no ill affect on processing.

Q: 7. are the powders mixed together in one container for each solution or are they packed in their individual containers for mixing in water or propylene glycol ?

A: According to the manufacturer, part A and part B of the PyroCat-HD Film Developer can be mixed in one container.

Q: 8. Does this come with a chart of development times for common film stocks?

A: No, the Photographers' Formulary Substitute for D-19 Black & White Film Developer (to Make 1 l Working Solution) does not come with a chart of development times for common film stocks.

Q: 9. Whats the shelf life of the dry powder? Can i make accurately weighted small batches of the powder and make lets say 1/3s of a gallon each time instead of making the whole gallon in one go?

A: I don't recall if it has an expiration date on it or not, but I've opened packages that were a couple years old and they worked perfectly fine. However mixing small batches probably isn't a good idea. I imagine you'd get pretty inconsistent results. I'd recommend just mixing up a gallon and keeping it in an air tight container. I've kept it many months that way with no adverse effects. Even if some goes bad, that's better than ruining film with inconsistent small batches. An alternative, if you can ship liquids to your location, would be to look into rodinal developer.

Q: 10. Can this be used for developing black and white paper prints?

A: While technically film developer can be used to develop prints, its concentration/strength is significantly weaker and you would get very different developing times, contrast, etc. Your mileage may vary. It's best to stick to the appropriate developer for best results.