So, we're looking to consolidate our glove purchasing to see if we can get better deals by buying in bulk.  Over the years, we've successfully gotten all of our scientists to use 4 mil disposable nitrile gloves (as opposed to latex or vinyl) as our "default" disposable choice.   Since all of the labs buy their own supplies, we have folks with definite preferences for purple, bright green, blue etc, but I have yet to find any actual data that would suggest that one brand is superior to another in terms of chemical resistance, mechanical integrity, puncture resistance, combustibility, etc..   One frequently sees caveats about differences in manufacturers' formulations making it impossible to apply information about one brand to another, but has anyone come across actual evaluations that show one to be superior to another?

I'd like to have a basis for choosing other than "favorite color," but I'm coming up short.   Any suggestions?

                          Don