Quote Originally Posted by Jerevan View Post
So - what does this mean, in practice? That the "R" version is useless for making emulsions? How does a precipitation gelatine differ? Higher/lower bloom, or other things that differ?
You can use it for precipitation but if you want consistant results you should choose the precipitation version. Basically P is the selction from the selection. The purest batches which have a narrower difference in bloom index get chosen as precipitation gelatin whilst the specs are not so strict for coating gelatin.
I think the bloom index is also shifted a bit because from the coating gelatin usually the top layer is manufactured which is on one end of the viscosity bandwidth of a coating package. But this can also be adjusted by other means. I donīt really know this last point for sure.

I am sorry for the late reply but I didnīt know this thread had developed later on.