Thanks Richard. I looked again at the Ilford settings for the Durst. If using a single filter then grade 0 is indicated as 150Y with 5 being 170M. However using two colour filtration grade 0 is 115Y 0M and grade 5 0Y 170M. WHy the disparity when both settings for grade 0 are in effect using 0M? Is this so that exposure times for the next grade up using 2 colour filtration are not affected?

With split grade printing would it then be correct to use the single filtration method as logically grade 0 and grade 5 are only using one colour.

OT - wrt laminate floors, I've had the unfortunate duty to fit them in several rooms in the house. Much easier to clean etc. but a sod on the knees when fitting them.