The GISCOM Buchner Funnel with Thin Stem is a precision-engineered porcelain filtration funnel designed for vacuum filtration of chemical, biological, and analytical samples. Featuring a fixed perforated plate and a refined thin stem outlet, it ensures smooth filtration flow and consistent separation. Its robust construction makes it essential for laboratories requiring reliable, contamination-free solid–liquid separation in routine and high-precision workflows.
Key Features
- Manufactured from premium, chemical-resistant porcelain
- Fixed perforated plate ensures stable support for filter papers
- Thin stem facilitates controlled liquid discharge and vacuum compatibility
- Glazed inside and outside (except rim) for easy cleaning and sample purity
- High mechanical strength and chip-resistant body
- Heat-resistant, chemically inert, and suitable for repetitive filtration cycles
- Smooth interior finish reduces sample adherence and enhances flow efficiency
Material Specifications
- Material: Laboratory-grade porcelain
- Thermal Properties: Withstands moderate heating during filtration processes. Resistant to thermal shock when used properly
- Chemical Properties: High resistance to acids, alkalis, and most laboratory reagents. A glazed surface minimizes porosity and contamination
- Mechanical Properties: Strong ceramic body with reinforced walls and stable base
- Standards: Manufactured under ISO-aligned quality and dimensional control
Technical Specifications
- Available Sizes: Multiple diameters and capacities to fit standard filter papers
- Design: Fixed perforated plate, Thin stem outlet for improved vacuum performance
- Dimensions & Tolerances: Consistent shape and plate perforation pattern for uniform filtration
- Calibration: Not required
- Accessories: Compatible filter papers available separately
Handling & Precautions
- Do not expose the funnel to sudden temperature changes
- Use with the appropriate filter paper size for best performance
- Clean with non-abrasive detergents; avoid metal scouring pads
- Do not exceed recommended heating limits; avoid open flame contact
- Ensure proper support when used with the vacuum apparatus
- Store securely to prevent chipping or breakage
Applications
- Routine laboratory filtration in academic, industrial, and research labs
- Solid–liquid separation in chemical, pharmaceutical, and biotech processes
- Sample clarification, recrystallization, and precipitate collection
- Essential for QC/QA departments requiring consistent filtration results
- Ideal for microbiology, analytical chemistry, and general lab workflows
