High-Quality Borosilicate Glass Construction Made of 3.3 borosilicate glass with excellent thermal resistance and chemical stability Suitable for strong vacuum conditions and repeated laboratory use Smooth surface for easy cleaning and long service life Complete Vacuum Filtration Assembly Includes 1000 mL filtering flask and 300 mL graduated funnel Equipped with plastic filter cup cover and sturdy aluminum alloy clamp Provides tight sealing and stable connection under vacuum Easy Assembly & Maintenance Can be assembled and disassembled within minutes All parts are easy to clean and can be stored back in the original packaging Compact structure for convenient storage and transportation Safe & Protective Packaging Each glass component is individually wrapped and protected with foam Designed to reduce breakage risk during shipping and handling Wide Range of Applications Suitable for solid–liquid separation, solution clarification and purification Commonly used for HPLC mobile phase filtration, chemical analysis, biological experiments and educational laboratories Applicable in research labs, industrial quality control and small home laboratories Membrane & Vacuum Connection Notes Compatible with standard 47 mm or 50 mm filter membranes Membranes with highly textured surfaces (such as PTFE) are not recommended due to possible clogging and cleaning difficulty Requires an external vacuum pump and connecting hose (not included) for vacuum operation This borosilicate glass vacuum filtration and distillation apparatus provides a practical, durable and laboratory-grade solution for routine filtration and purification tasks.