Thank you all for your knowledge and input, Could one say that the majority of commercially available lith developers use paraformaldehyde? Any speculation as to which of the developers will last longer in the tray? As I have been reprinting my China portfolio for a couple of shows I have scheduled this Spring, I have been running through a lot of lith developer and the costs have been a bit higher than I have been used to spending. After the last batch with new prices on a particular lith developer, the cost has risen to about a dollar a print for development alone. In the past I have had much less expensive developers and a broader selection available and have for probably about 10 years thought of trying other formula, but as I have all of the chemicals available, I have forgotten what I have spent on them. I suppose the first experiments will simply be to see how well the different formula work then doing the calculations after the fact to see what the costs of each are in relation to performance. I will stay with my current processes for consistency on the portfolio but have a decent amount of the paper left and would like to find an active developer to keep me from spending 30 minutes processing a print from exposure through development. Thank you again, Robert Hall www.RobertHall.com