Provides easy and efficient handling of freeze dry samplesBorosilicate glass withstands extreme temperatures and high vacuumCompatible with any brand freeze dryer with ¾” diameter valve portsFlat bottom and wide mouth design provides easy loading and cleaningThe Fast-Freeze™ drying flask is constructed of high strength borosilicate glass which can withstand a maximum temperature of 490º C. It easily attaches to the valve ports on Labconco drying chambers, manifolds, and freeze dryer systems with the use of an adapter (sold separately).