Talk:Damage 2.0/Slash Damage/@comment-5660237-20151129102429/@comment-24933519-20151202161926

afaik it works of the base weapon damage [unmodded] however, the slash mod will increase the chance of that proc being slash, as IPS [impact puncture slash] weapons weight procs by percentage damage of the weapon, eg if you have 50% chance to proc, with a IPS of 20/20/60 you have 20% chance of that proc being impact or puncture and 60% of it being slash.

with elemental only weapons the chance is spread amongst number of elements present i.e. if you have 30 blast and 40 corrosive, youll have 3/7 chance of blast proc, and 4/7 of it being corrosive.

keep in mind   physical damage types are weighted  four  times as much as elemental types are in the proc calculation, making elemental procs relatively rarer [taken from status effects page] so yeah, proc calculations are fun