Try checking a "massive development chart" to see if you're combination is listed. Do a serach for 'IR750' and you'll find one. When I started developing IR750 I couldn't find any recommendations for my developer (Ilford LC29 @ 1:29) so compared recommendations for other films in my developer vs those films in the developers mentioned for IR750 and based on the % differences came up with a time. They gave me good negs but I have been refining the processing time with each roll (I'm reducing the time) I find IR750 quite contrasty (compared to FP4 which I use) and usually print on G2 MGIV paper although sometimes use G1 (I print FP4 on G3 generally) My 1st roll also suffered from recirculation so I now ensure the wash temp doesn't alter by more than a degree.(posted 9079 days ago)Cheers, Nige