Ether has an extremely low flash point. Have no open flames nearby. Avoid inhaling ether vapors. Store ether in metal containers. Conduct the extractions in a well ventilated area.
Peroxides can accumulate in open containers of ether.
These are explosive and shock sensitive. Check each container opened for more than 30 days for peroxides. Ether-containing peroxides must be disposed with special techniques. Electrical equipment is to be grounded. Extractors should be spark-proof.