Flic Film's Quintol Neutral Tone Paper Developer is a traditional style paper developer that makes a 1, 4 and 20 litres of stock solution. This solution may be kept for 6 months in a fully stoppered bottle. Dilutions can vary from 1:1 to 1:4 depending upon the desired contrast and tone of the print. The development times are the same as those for Kodak Dektol.