Glass Filter Funnel

Glass Filter Funnels are fundamental laboratory glassware essentials engineered for rapid, efficient liquid filtration and smooth fluid transfer. Fabricated from premium borosilicate glass, these classic 60° conical funnels are built to accommodate standard circular filter papers or folded fluted filters perfectly, maximizing filtration surface area and minimizing operational downtime.

Featuring a heavy-duty uniform wall construction and a precision-ground delivery stem cut at a specialized 45° angle, these funnels facilitate optimal liquid flow while preventing air locks along the receiving vessel wall. Their superior chemical and thermal resistance makes them highly suitable for handling hot solutions, strong acids, volatile organic solvents, and corrosive reagents without risk of degradation.

Key Features

• Manufactured from premium borosilicate 3.3 glass for maximum chemical inertness and exceptional thermal shock resistance
  
• Accurate 60° cone angle designed to ensure a precise, snug fit for standard laboratory filter papers
  
• Precision-formed stem with an angled 45° tip to ensure clean, splash-free liquid flow along the container walls
  
• Heavy-wall structural engineering with a reinforced beaded rim to withstand everyday laboratory handling and clamping
  
• Available in a comprehensive range of dimensions, from small micro-chemistry sizes to large-capacity industrial diameters
• International Standards

Our conical glass filter funnels are engineered and manufactured in strict compliance with globally accepted dimensional and quality parameters, ensuring seamless compatibility across international markets:

• ISO 4798 – Laboratory Glassware – Filter Funnels for General Laboratory Use
  
• ASTM E438 – Standard Specification for Glasses in Laboratory Apparatus Manufacturing
  
• DIN 12445 – European Quality and Dimension Standards for Laboratory Conical Funnels
• Available in various bowl diameters (e.g., 35mm, 50mm, 65mm, 75mm, 100mm, 150mm) with long or short stem options. Custom dimensions, ribbed/fluted internal glass walls for high-speed filtration, or integrated ground glass joints can be engineered per bulk commercial requests.

Applications

Extensively utilized across analytical chemistry labs, pharmaceutical testing facilities, clinical research centers, food and beverage quality control, academic teaching environments, and industrial processing plants for routine gravity filtrations, solution decanting, and powder transfers.

Why Choose Our Products

• Export-grade glassware featuring flawless optical clarity and zero structural micro-strains via computer-controlled annealing
  
• Perfect geometric symmetry ensuring balanced positioning inside standard funnel rings and support stands
  
• Highly durable, non-porous glass surfaces that resist residue adhesion for effortless washing and autoclaving
  
• Trusted supplier by international scientific catalog corporations, tender boards, and B2B medical-laboratory distributors