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The left-most button moves the contents of the middle tube into the left one, while the middle and right buttons allow you to rotate the tubes round. There are three tubes - small, medium and large - and three buttons to control them. The aim is to create the exact amount of solution for the capsule, indicated by the red line. Get the Herbicide Synthesis File from the table, and approach the workshop in the corner. To reach the puzzle, first find the Greenhouse Control Room code locations then head from into the Greenhouse, go left then left again. Dispersal Capsule puzzle solution in the Drug Testing Lab

Looking for something else? Visit our Resident Evil 2 walkthrough for more help. There you'll have to solve the Dispersal Capsule puzzle, and also pick up a new key item - the Signal Modulator. The Drug Testing Lab follows on finding both Greenhouse Control Room code locations in Resident Evil 2.
