Wow, thanks folks, for all of your replies and pointers, and of coarse your well-wishes; very much appreciated! This is a fantastic group of people here on this fine forum.
And Jaco, what can I say? You took time out of your busy day to write to me at length; there is a wealth of knowledge in your post. Thank-you so much for this; I have copied your info onto my desktop. Much appreciated!
Glen
Glen, it is only a pleasure, and a simple reciprocation of all the free advice and directions I have been given. I believe you North Americans have a saying "Pay it forward", which is uncommon as a saying in my country, although the principle generally applies. There are many analogue photographers who have been doing that, to the extent that it is more or less tradition.
Some additional advice for you to start up:
Get copies of
The film developing cookbook and
The darkroom cookbook, by Steve Anchell and Bill Troop, if you haven't already done so. Even if you use very little in terms of chemical formulas etc out of those books, it will bring your understanding of films and photo chemistry onto a whole new level. Ansel Adams's trinity (The Camera, The Negative, The Print) also makes for good reading, although some things (modern developers and tabular grain films) have moved on in the time since he wrote those.
A lot has been written about all the different films, and you will easily find all the info and examples for something you want to try out. The temptation will be there to test every film on the planet, but your learning curve will be better served by keeping things simple. It is also worth remembering that the best sellers sell best for a reason, and there isn't such a thing as an obscure film and developing technique that will suddenly transform your results into something unique and mysterious. Pity, but it is true
. So start with one, maybe two, films and only move on once you have them nailed in exposure and development.
Onto Parodinal: My panadonal-K formula is based on parodinal, but with a correction to more closely match the original Rodinal formula, as well as switching to potassium chemicals to get greater solubility. The name plays on Panado, which is our local paracetamol (aka acetaminophen) product. I believe Tylenol is an equivalent. The capsules work better as they do not contain binder, but tablets can be ground in a mortar and pestle and will still work. The formula is:
Water: 100 ml
Sodium sulfite: 40 g
Dissolve at roughly 50 degC (122 degF)
Water: 60 ml
Potassium hydroxide: 17.9 g
Dissolve the hydroxide, then add 15 g (30 capsules) of paracetamol while the hydroxide solution is still hot. Stir in the powder thoroughly and break any clots. It will turn reddish and murky, which is fine.
Once the two parts are cool, combine. Use the sulfite solution to wash out all the paracetamol solution. Make the final volume up to 200 ml. Any undissolved sulfite can be added as crystals to the final container - it will dissolve over time. The brew is ready to use within two to three days. It is important that the cap of the bottle seals really tightly, as air leaks will eventually destroy the developing agent (4-aminophenol). Do not be alarmed if it turns redder everytime you open the bottle - that is natural, and it will still be active even if it looks like cola concentrate.
I'll post the ascorbate-corrected formulas for Caffenol too if you need them. In another Xtol-related thread someone asked why ascorbate instead of ascorbic acid. For me it is about availability, which is apparently no problem in the US, but elsewhere may be. I had no luck with health food stores and eventually bought from a chemicals distributor. The ascorbate dissolves instantly, and does not react with bases such as carbonates. So it also does not produce CO2 bubbles. If one can let it de-gas for some time, that should be no problem, but I dislike the idea of bubbles forming on the emulsion and depriving the film of developer. The reason for using caustic and baking sodas is that they combine to form washing soda. Washing soda has three hydration states, and as a result is at times impossible to weigh accurately. Since baking and caustic sodas do not form hydrates, they can be weighed accurately. Simple as that.
Did I mention that you should get a small scale? Something that measures up to 100 grams with 0.1 g accuracy will be more than sufficient. They are available for $10 a piece (or less) and will make life a lot easier if you are going to work with chemicals.
J