its so easy there is a chart with the number of each you need but no red the total is 9 it goes 3 blue ,2 green and 4 red
What you use the beaker for is, when you get into the living quarters then you will need it for a Herbicide mixture that will kill the "monster"...the Herbicide mixture formula is ( 3 Blue 2 green 4 Red )
its in the museum on mainstreet of steamworks island :)
It's Steamworks Island #14th Island
(The solution is at the related question "How do you beat Steamworks Island")
the crab on steamworks island is next to the living quarters
You go to Steamworks and head to the museum and there is the Deogen
steamworks island
There is a video walkthrough at the related link below. There are written WikiAnswers solutions at the related questions, as there are for all Poptropica islands. (How do you beat Steamworks Island) (What is the walkthrough for Steamworks Island)
You just get the codes (on the other cheats) and enter them in.
Steamworks island
you can get it on the far left of steamworks island, past the living headquarters.
how to do the bridge terminal on poptropica's steamworks island