Dear all. I'm following a procedure in order to use AOM (Azoxymethane) in a mice colorectal cancer inducing. I've determined I need only 20 microliters from a glass container of 100 microliters of commercial AOM. Can I only use 20 microliters and storage 80 microliters in a sterile glass container? Or maybe the remaining AOM will evaporate and concentrate? What is the best choice in order to preserve the remaining 80 microliters (temperature, diluting, etc.). Thanks in advance.