H&W is no longer made. Technidol will give an EI of 25. To get 80- 100 EI with tech pan, try Ethol TEC, or one of the Photographer's Formulary developers. See http://www.digitaltruth.com for the massive developer charts for more possibilities. A new revelation to me is how well kodak's 400 chromegenic film compares to t-max 100 and tech pan! Just yesterday, I printed 14x20 prints from the kodak film and there is suprising little grain! FWIW.(posted 8671 days ago)