Application of Eastman Kodak's technical pan 2415 film to palynological photomicrography

Abstract

Technical Pan 2415 Film, recently introduced by Eastman Kodak Company, can be processed to achieve photomicrographs similar to those obtained by using their recently discontinued High Contrast Copy Film. Exposures were made at an ASA of 80 to 200, and the film was developed in a 1:4 dilution of HC‐110 stock developer for 6 minutes at 21°C. The method is presented as an alternative to the manufacturer's recommended developer dilutions and times, as these resulted in negatives of either too low or too high contrast for use in palynological photomicrography.