Magnesium hydroxide
Blue bottle
Carbon dioxide
Gray
Carbon dioxide & Oxygen
Gray-Green
Oxygen
Green
Nitrogen
Black
Nitrous oxide
Blue
Hydrogen
Red
ARGon
dARK GReen
heliuM
broWn
acetylEnE
MarOOn
Chlorine
Yellow
LithIUM
Coated w/ PetrolEUM or Under oil
White/yelloW p
underWater