Distilling Flask Capacity - Metric 500 mL Capacity - English 16.9 fl oz Flask Type Distilling USP Specification Type I Includes Closure No Closure Type Stopper Neck Style Straight Closure Material No Closure Compatible with Stopper Size 22 Body Material Borosilicate Glass Sterile/Non-Sterile Non-Sterile Autoclavable Yes Body Color Clear Graduated No Graduation Increments - Metric Not Applicable Glassware Class A ASTM Specification E438 Basic Material Glass