Graveyard dust effects

[Putrid]

This is taken off the recipe site:
Potion Of Graveyard Dust
MAGIC ITEM
Charges: 1
Effect: graveyard dust
Recommended level of 25
WT: 0.8 Size: SMALL
Class: ALL
Race: ALL
item lore: potion of graveyard dust
EQTC notes: +28 (lvl 1) to 49 (lvl 65) strength & agility, haste: 70% (lvl 1) to 134% (lvl 65)

I am wondering about the haste part. That does not seem to be right, but it would be great if it was. Anyone know if the numbers are correct?
I did a search and this was ask once before, but there was no specific answer.

[Darjeeling]

Info is correct, but buff only lasts 2 mins or so.