The All Glass Filter Holder -47 mm, Filtration Assembly engineered by Edulabs is an essential analytical tool designed for precise vacuum filtration, liquid clarification, and mobile phase solvent preparation. Specifically optimized for High-Performance Liquid Chromatography (HPLC) workflows, this assembly removes particulate matter and micro-contaminants that could otherwise clog delicate chromatographic columns, damage sensitive pump valves, or alter analytical baseline stability.

The core operational principle of this assembly relies on differential pressure created by an external laboratory vacuum pump connected to the integral side-arm tubulation. As vacuum is applied, the liquid solution poured into the top 300 ml funnel is drawn downward across a 47 mm membrane filter resting upon a porous fritted glass support base. A critical design feature of this Edulabs assembly is the location of the vacuum connection: situated cleanly above the filtrate drip tube, this geometry prevents liquid droplets from being sucked directly into the vacuum line, safeguarding both the pump and the filtrate from cross-contamination.

Constructed from superior BORO 3.3 Borosilicate Glass, every glass component displays exceptional chemical neutrality, allowing safe processing of aggressive solvents, corrosive acids, and pure organic mobile phases without leaching contaminants. The structural alignment is maintained by an anodized aluminum spring clamp, which exerts uniform, calibrated clamping force around the glass flange of the funnel and fritted base, delivering a secure, airtight seal without damaging the glass flanges.

By providing clean, reliable filtration performance, the Edulabs All Glass Filter Holder ensures reproducible results across academic research, pharmaceutical quality assurance, and environmental testing applications. Its robust construction and standardized design ensure long-term serviceability, ease of maintenance, and maximum operational safety in demanding analytical environments.

Key Features

• Made from high-purity BORO 3.3 Borosilicate Glass for ultimate chemical resistance.

• Integral vacuum connection positioned above filtrate drip prevents line contamination.

• Porous fritted glass filter base ensures uniform flow distribution across 47 mm membranes.

• Includes a 300 ml capacity borosilicate glass funnel with clear graduation lines.

• Heavy-duty anodized aluminum spring clamp provides uniform pressure and leak-tight sealing.

• Specifically optimized for HPLC mobile phase purification and degasification support.

• Compatible with standard 47 mm diameter membrane filters of various pore sizes.

• Excellent thermal and chemical stability across aggressive organic solvents and acids.

• Easy disassembly for quick cleaning, filter replacement, and autoclavable sterilization.

• Engineered to prevent sample contamination in high-sensitivity analytical workflows.

Technical Specifications

Available Models

Spares for All Glass Filter Holder

Applications

• Purification and clarification of HPLC mobile phases and reagents.

• Particulate removal from analytical solvent mixtures prior to chromatography.

• Microbiological media clarification and particulate analysis.

• Gravimetric analysis of suspended solids in water and wastewater samples.

• Cold sterilization of heat-sensitive biological solutions and buffer preparations.

• Environmental air and water quality monitoring filtration routines.

• Sample clarification in pharmaceutical quality control and research labs.

• Food and beverage quality assurance testing for micro-particulate content.

• Isolation of precipitates and chemical residues in chemical synthesis.

• General vacuum-assisted liquid-solid separation in academic research.

Note

Edulabs also offers a comprehensive range of laboratory glassware, laboratory plasticware, laboratory chemicals, laboratory instruments, laboratory equipment, scientific apparatus, educational laboratory equipment, and customized laboratory solutions for educational institutions, research laboratories, pharmaceutical industries, healthcare facilities, biotechnology laboratories, environmental testing laboratories, food and beverage laboratories, and industrial quality control laboratories. Contact Edulabs for bulk orders and OEM requirements.