Hirsch Funnel

The GISCOM Hirsch Funnel is a high-quality porcelain filtration funnel designed for the efficient separation of fine solids from small volumes of liquid. Its compact, steep-angled structure and fixed perforated plate make it ideal for microscale and analytical filtration work. Widely used in laboratories where precision, durability, and chemical resistance are essential, it supports reliable filtration in routine and research applications.

Key Features

• Fixed perforated plate ensures uniform filtration and stable support for filter papers.
• High-strength porcelain body, glazed inside for smooth flow and chemical resistance (rim unglazed for secure handling).
• Steeply angled walls designed for fast filtration and reduced sample retention.
• Excellent thermal and chemical durability suitable for a wide range of reagents.
• Robust construction for repeated laboratory use, even under high-temperature conditions.
• Ideal for small-volume filtration operations in analytical workflows.

 Material Specifications

• Material: High-grade laboratory porcelain.
• Properties: Resistant to acids, alkalis, and most laboratory reagents. High thermal endurance; suitable for heating, drying, and autoclaving. Strong mechanical strength for long-term laboratory use.
• Standards: Manufactured in compliance with international laboratory porcelain standards (ISO/DIN compatible).

Technical Specifications

• Available Sizes/Capacities: Multiple standard diameters for micro- and small-scale filtration (custom/OEM sizes available upon request).
• Dimensions: Fixed perforated plate with optimised hole configuration for uniform flow.
• Tolerance/Accuracy: Precision-made filtration plate ensuring consistent pore distribution.
• Accessories: Compatible with standard filter papers (not included).

Handling & Precautions

• Always ensure the filter paper fits properly over the perforated plate to avoid bypass.
• Clean using mild detergents; avoid abrasive scrubbers to protect the glaze.
• Autoclavable; suitable for drying ovens—do not expose to sudden temperature shocks.
• Avoid direct flame or extreme thermal gradients to prevent cracking.
• Store in a dry, cushioned environment to prevent chipping of the rim.

Applications

• Ideal for analytical chemistry, microfiltration, and solid-liquid separation in small sample volumes.
• Widely used in pharmaceutical QC/QA labs, chemical industries, biotechnology, academic laboratories, and research institutions.
• Suitable for crystallisation studies, precipitate recovery, qualitative analysis, and microscale filtration workflows.