PYREX® 250mL Graduated Cylindrical Glass Separatory Funnel with PTFE Stopcock and Glass Stopper – 6383-250

The PYREX® 250mL Graduated Cylindrical Glass Separatory Funnel is a durable laboratory instrument designed for liquid-liquid extraction, solvent separation, controlled liquid addition, and chemical sample preparation. Featuring a cylindrical glass body with 2mL graduations, a micro-finished No. 2 PTFE Product Standard stopcock, and a No. 22 hollow glass standard taper stopper, the funnel provides controlled liquid discharge with minimal risk of sticking or grease contamination. Ideal for pharmaceutical laboratories, chemical analysis, research institutions, biotechnology facilities, and educational laboratories. Key Features - 250mL Capacity: Suitable for small-to-medium-volume liquid-liquid extraction and solvent separation. - Cylindrical Glass Body: Facilitates controlled liquid handling and monitoring of liquid levels. - 2mL Graduations: Provides approximate volume measurements during laboratory procedures. - No. 2 PTFE Stopcock: Chemically resistant stopcock for controlled liquid discharge. - Micro-Finished Stopcock Barrel: Helps reduce sticking and eliminates the need for grease lubrication. - No. 22 Glass Stopper: Lightweight hollow glass standard taper stopper for secure closure. - Straight-Bore Stopcock: Supports smooth liquid flow during extraction and sample preparation. - Rimless Top Design: Provides a streamlined laboratory configuration. - 65mm Stem Below Stopcock: Supports controlled drainage into laboratory containers. - Reusable Construction: Designed for repeated laboratory applications. Corning+1 Specification Details Brand PYREX® Manufacturer Corning Product Number 6383-250 Product Type Graduated Cylindrical Separatory Funnel Capacity 250mL Material Laboratory Glass Funnel Style Cylindrical Separatory Body Shape Cylindrical Body Outer Diameter Approximately 52mm Graduation Interval 2mL Graduation Type Approximate Volume Stopcock Type Product Standard PTFE Stopcock Style Straight Bore PTFE Stopcock Plug Number No. 2 Stopcock Barrel Micro-Finished Stopper Type Standard Taper Glass Stopper Glass Stopper Number No. 22 Stopper Style Hollow Glass Top Design Rimless Stem Outer Diameter Approximately 10mm Stem Length Below Stopcock Approximately 65mm Overall Height with Stopper Approximately 340mm Grease Lubrication Required No Reusable Yes Quantity per Pack 1 Piece Quantity per Case 4 Pieces Applications Liquid-Liquid Extraction, Controlled Liquid Addition, Solvent Separation, Chemical Analysis