Hello. I have used PMK for tech pan as follows: 1 1/2ml A, 24 ml B and 600 ml water. this is for one 120 roll. 8 min. @ 69 f. It is the closest to good results with tech pan. But I have been using PMK for a number of years and if necessary will try different dilutions, it is a very flexible formula. Hope this helps.(posted 8404 days ago)