An update on the Axford-Kendal PQ Fine Grain Film Developer
Two papers, in 1956 & 57 looked at the effects of bromide and replenishment on this developer which by then had been released under the Autophen trade name. A third paper relates to testing procedures to determine Phenidone & Hydroquinone levels.
Unlike ID-11/D76 the Axford/Kendal PQ - F.G.F. developer doesn't suffer from Bromide build up and needs a lower rate of replenishment as a consequence making it significantly more economic. Ilford ID-166 (D76d) was used as the reference standard.
Tests were carried out in a commercial laboratory using a 24 gallon (UK) process line/tank and 65,000 rolls of film processed with topping up replenishment, giving consistent results. With MQ developers a bleed system of replenishment is required.
That's 595 rolls of film per litre !!!! Who says replenishments not economic ?
Last edited by Ian Grant; 05-26-2010 at 12:12 PM. Click to view previous post history.