GaryK227

Here is a link to the post that I referenced in my original post. The author indicates he used "dilution B (1 part developer to 63 parts water) for 9 minutes at 20 degrees Celsius" but I thought dilution B was 1:31. But the 9 minutes of developing would appear to be consistent with a weaker solution. Thoughts? Expired Film: Developing Ancient Black and White Film · Lomography

Thanks to everyone for your replies. They are very helpful. On another note, I have a roll of 2475 (?) recording film also from many years ago exposed at an EI of probably 3000 from the Phil Ochs Memorial Conert at the Felt Forum in NY. Any suggestions on developing that?

What is the "natural color of HC-110? It has been so long for me that I don't remember

Recently as I was going through an old box of photography stuff, I came across 3 rolls of Tri-X and one roll of Plus-X 35mm exposed but not developed film. The best I can tell is that this film is likely 40 years old, give or take. It has been stored in the original plastic cannisters in another plastic container in a box in my basement, so that temperature fluctuations have been limited. So, my question is how do I develop this? I found one article online where someone faced with similar used HC-110 in a 1:63 dilutions at 20 degrees C (68F) agitating for 10 seconds every minute and total development time of 9 minutes. Do any of you have experience in developing old similar film and what do you recommend based on your experience? This leads to another question - How long does HC-110 concentrate last? In that same box I have an old bottle of HC-110. It appears to have been opened but little used and then closed after squeezing most of the air out. It is probably about as old as the film (40 yrs). I guess prudence would dictate tossing it and buying new, but, again, anyone know from experience? Thank you. Gary