Filtration

Funnels, Filtration & Vacuum

Funnels, vacuum tools, desiccators, and transfer accessories for filtration, drying, and preparation tasks.

Heavy-Wall Filtering Flasks, PP

Robust heavy-wall PP Buchner flasks designed for vacuum filtration applications. The thick-wall construction resists implosion under vacuum and provides long-term durability in demanding laboratory environments.

Two-Piece Buchner Funnels, PP

Practical two-piece PP Buchner funnel featuring a separable funnel top and base for thorough cleaning between filtrations. The two-piece design eliminates dead zones where particulate residue can accumulate, ensuring contamination-free operation across multiple samples.

Pear-Shaped Separatory Funnels, PP

Precision PP separatory funnel featuring a high-performance PTFE stopcock for smooth, leak-free operation during liquid-liquid extractions. The PTFE plug requires no grease lubrication, eliminating a common source of sample contamination.

Laboratory Transfer Funnels, PP

Economical lightweight PP funnels with a straight stem design for smooth, uninterrupted liquid flow during filtration and transfer. The smooth interior surface minimizes particulate adherence and facilitates rapid drainage.

Powder Funnels, PP

Specialized PP powder funnels engineered with a wide, parallel-sided stem to eliminate powder bridging and clogging during transfer. The straight-bore stem design allows free flow of granulated solids, crystalline materials, and free-flowing powders without the constriction points that cause blockages in conventional funnels.

Long-Stem Thistle Funnels, PP

Elegant PP thistle funnel with a smooth, flared top and fine capillary stem for precise micro-scale liquid addition and separation. The thistle shape provides a generous reservoir for controlled, drop-wise delivery of reagents into closed systems.

Hand-Operated Vacuum Pump with Gauge

Hand-operated vacuum pump with an integrated gauge and hose connection. Construction material, seal material, and achievable vacuum range require supplier confirmation.

Vacuum Filtration Kits, PP

Laboratory vacuum filtration assemblies combining a Buchner-style funnel, receiving flask, sealing adapter, and compatible vacuum connection. The modular setup supports rapid filtration, clarification, and solid-liquid separation in teaching, research, and routine sample preparation.

Rubber Filtering-Flask Adapters, 9-Piece Set

Tapered rubber adapters for sealing Buchner funnels to vacuum flasks and filtration vessels. Nested sizes provide a practical fit across different funnel stems and flask necks, helping maintain vacuum while protecting contacting glass or plastic surfaces.