Division 5.6 Mojonnier-type fat extraction flasks

The flasks (or tubes) shall be provided with ground-glass or good quality bark corks or other stoppers unaffected by the reagents used. Rark corks shall be extracted with the diethyl ether (4.4.) kept in water at 60 ^oC or more for at least 15 minutes, and shall then be allowed to cool in water so that they are saturated when used.