Plan: Chemist's Backpack Mod

Plan: Chemist's backpack mod is a plan in Fallout 76, introduced in the Wastelanders update.

Locations
It can be bought from Mortimer in the Crater Core for 350 gold bullion when the Friendly reputation is reached with the Raiders.

Unlocks
This plan unlocks crafting of the chemist's backpack mod that, once attached, reduces the weight of all chems by 90%.