SRD:Alchemist's Lab

Alchemist’s Lab
An alchemist’s lab always has the perfect tool for making alchemical items, so it provides a +2 circumstance bonus on Craft (alchemy) checks. It has no bearing on the costs related to the Craft (alchemy) skill. Without this lab, a character with the Craft (alchemy) skill is assumed to have enough tools to use the skill but not enough to get the +2 bonus that the lab provides.