The Gas Anesthesia Mask Adaptors for Stereotaxic instruments enable gas anesthesia of rats or mice in a Lab Standard,™ or other brands of stereotaxic instruments, without exposing the researcher to the anesthetic gas.

The Gas Anesthesia Mask Adaptor is installed by removing the nose clamp from the standard rat adaptor, sliding the mask over the incisor bar, with the cone opening toward the open “U”. The animal’s teeth are placed over the incisor bar and the adaptor is slid forward until the cone is snug about the animal’s nose. The mask substitutes for the nose clamp. The teeth and the cone provide a very stable hold.

Gas flows in the tubing connector on one side, past the animal’s nose, and out the tubing connector on the other side. From there, spent gas may be routed to recycling, exhaust, or gas analysis instruments.