I've been shooting bulk loaded tech pan for about 10 years. It is the only 35mm B&W film that I use (other then a couple rolls of kodak HIE now and then). Two other developers that work with tech pan are Ethol TEC at 30:1 and diafine with 45-60 second development in the "b" solution. Both yield an EI of 100. The beauty of diafine, is agitation, temperature and time are not critical for most normal contrast films. With tech pan you shorten the "b" time to control contrast.(posted 8736 days ago)Both are dirt cheap compared to technidol. Diafine is great for those of us that find film development not very creative.