[Ian Grant]

What are the advantages of powder developers?

I've used D76 many times for developing film.... same principal or is it harder to mix powders for paper?

Powder developers tend to be Metol based and have a shorter tray life than developers using Phenidone or Dimezone instead.

Powdered Dektol/D72 is an MQ developer so uses Metol while Liquid Dektol (Polymax in some countries) is a PQ developer.

The big advantage of PQ based print developers is they can be sold as concentrates, have a much longer shelf life, and are more economic.

Ian