The phrase "differ per" is correct and usable in written English.
It is often used in a comparative context, such as "Temperature can greatly differ per region."
New data also provides a fascinating insight into how users of BBC iPlayer, now available on more than 20 different devices, differ per platform.
The results of the study of Falagas et al. may explain the different correlations for the different lists since the contents of the assessment differ per list.
Again, this will be easy in laboratories where permethylation is already employed; however, since the number of permethylation sites may differ per glycan, the Δ m generated is also different per glycan.
As dementia care networks in the Netherlands differ per region and case management was implemented in different ways, the theoretical model seems a justified method to compare facilitators and barriers to these different implementation processes.
The optimal parameter combinations differ per resolution.
The raison d'etre can also differ per industry.
This means that the hygienic requirements can differ per type of application.
For multiply connected domains these (unknown) constants differ per boundary and must be determined from integral conditions.
Barriers to entry differ per sector.
Physiological biodistribution and kinetic characteristics differ per tracer and per cancer type.
The smallest available unit for official data may differ per country.
