hans_van_hal

Thank you for the replies and advices. I also have undiluted HC-110 in stock. I will probably try the suggestion posted by John Shriver. Will let you all know the result.

From an inheritance I got an old film Kodak Infrared IR135. It seems to have been used but is still undeveloeped. It has been kept in a metal container. I want to develop, just in case there are still some images on it. End date is July 1957. I do realise changes are there is nothing usable left. Just seeking advice on development times. I use XTOL or Rodinal. Still have some D76.