30 likes | 164 Vues
organic solvent evaporation. use a gentle stream of air Direct it at the side of the test tube just above the liquid surface. store the air hose on the retort lattice at the back of the fumehood.
E N D
use a gentle stream of air • Direct it at the side of the test tube just above the liquid surface
store the air hose on the retort lattice • at the back of the fumehood