Hi Sol, my ISP has being down for some time. In subminiature B&W photography circle, Technidol is not popular, many submini photographers prefer to use 1:100 Rodinal (one part Rodinal in 100 part of weak sodium suphite solution, which contain 56g of sodium sulphite in 1000 cc of water. Techpan in technidol gives flatter negatives as compare with Rodinal. Rodinal gives sharper looking pictures. Personally I like to use Agfa Rodinal Special, another of version or Rodinal developer which contains hydroquinon.(posted 8725 days ago)In 1:100 dilution, the Rodinal Special appears to be weaker than regular Rodinal, and appears to gives finer grain.. Rodinal Special is sold only in Canada/EU, not in USA, probably because it contains allergy inducing substance