The 200 gp and 40 lbs one ! How large is it ? Can I put it on a table ?
Presumably it would cover a large table, and possibly have some equipment with its own stands. I don't believe images are provided in the books, but it's described as a lab or laboratory so it seems like the sort of equipment to fill a small room or facility. Something like this:
Image from Wikimedia commons
Compare with an Alchemist's Lab, Portable which should be, well, portable and weighs only twenty pounds, or an Alchemist's Kit which weighs only five pounds. The mere existence of the portable version indicates the regular version is not.
The size of an alchemist's lab is not specified by the rules. It's up to you and your GM to decide.