| Ragatokk |
Sorry for the necro, but I would rather bump this then start a new thread.
Tool, Masterwork (that lists the alchemist’s lab as part of it)
And Tools, Artisan's: These special tools include the items needed to pursue any single craft.
Masterwork Artisan’s Tools: These tools serve the same purpose as artisan’s tools, but masterwork artisan’s tools are the perfect tools for the job, so you get a +2
These are two different items listed separately, since circumstance bonuses stack so I am pretty sure I would not be wrong in saying that this would net you a +4 to alchemy,
Since the Portable alchemist's lab is listed as a sub part of the alchemist's lab I would assume the two do not stack, but I could be wrong.
Ref:
http://www.d20pfsrd.com/equipment/goods-and-services/tools-kits#TOC-Tool-Ar tisan-s
I belive the people talking about climbing here completely missed the point.