Temporary Weapon Buff DPS

Instant Poison DPS
= MH Poison Procs + OH Poison Procs + Special Attack Poison Procs
= Poison Damage/MH weapon Speed + Poison Damage/OH Weapon Speed + Poison Damage/Time in between Special Attacks (HM Only)
= Poison Damage * (MH Weapon Speed + OH Weapon Speed) / (MH Weapon Speed + OH Weapon Speed) + Poison Damage / (4 SS | 6 BS)
= (20% | 30% Improved IP) * (130 | 150 Viled Poison) * {[100% - max(24% - Hit Rate, 0)] * (MH Weapon Speed + OH Weapon Speed)/ (MH Weapon Speed * OH Weapon Speed) + [100% - max(5% - Hit Rate, 0)] / (4 SS | 6 BS)}

Example:
Assuming 5% Hit, BS, no Imp IP, no Viled Poison, Duel Wielding Instant Poison, 1.8 Speed MH, 1.6 Speed OH:
Instant Poison DPS = 29.2

Deadly Poison DPS
DPv5 is 136 Damage / 12 seconds, with 30% proc rate and stacks up to 5 charges. This shit is complicated. Time to do some Unit Algebra. Assuming 1.7 Speed Weapon.

(1 attack / 1.7 second) * ( 0.3 proc / 1 attack) = 0.176 PPS (Proc per second) or 5.67 second per proc. (10.6 PPM)

Over the course of 12 seconds, DPv5 will proc:

12 second * 0.176 PPS = 2.1 times

Thus DPv5 DPS = 2.1 * 136/12 = 23.8


Dense Sharpening Stone DPS
= DPS gained from +8 Damage
= 7.04 DPS (MH only)

0.88/0.28 is the DPS gained from +1 MH/OH damage using sensitivity analysis from my Excel calculator on 27% Crit, 6% Hit, 830 AP. It will vary on different spec but should stay roughly at around 2.8.

Elemental Sharpening Stone DPS
= DPS Gained from +2% Crit
= 5.56 DPS

2.78 is the DPS gained from +1% Crit using sensitivity analysis from my Excel calculator on 27% Crit, 6% Hit, 830 AP. It will vary on different spec but should stay roughly at around 2.8.