Filter Funnel
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Product Code : SCL-CLE-12381
The StemAids Filter Funnel is a precision-engineered laboratory instrument designed for efficient solid-liquid phase separation in University and Research environments. Fabricated from Borosilicate 3.3 glass, it ensures high resistance to thermal shock and chemical corrosion. Compliant with ISO 4798 standards, it is optimized for vacuum filtration and gravity-fed analytical procedures across Chemistry and Life Science curricula.
Technical Specifications
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Tender Specification |
OEM Technical Detail |
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Material Grade |
Low-expansion Borosilicate 3.3 Glass |
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Cone Angle |
Precision 60° geometry for optimal filter paper fit |
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Stem Design |
Heavy-duty uniform wall thickness with beveled tip |
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Thermal Resistance |
High-strain point; suitable for hot filtration |
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Chemical Durability |
Class 1 Hydrolytic Resistance (ISO 719) |
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ISO Compliance Code |
ISO 4798 (Laboratory glassware — Filter funnels) |
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HS Code |
7017.90 (Laboratory Glassware) |
Key Pedagogical Outcomes (Bloom’s Taxonomy Alignment)
Feature: 60° Precision Fluted/Plain Geometry Outcome: Facilitates student "Application" of filtration rate variables, allowing for the observation of surface tension and atmospheric pressure during gravity separation.
Feature: Borosilicate 3.3 Chemical Inertness Outcome: Supports the "Evaluation" of precipitate purity by eliminating ion-leaching interference, critical for high-fidelity quantitative analysis modules.
Feature: Fire-Polished Beveled Stem Outcome: Promotes "Understanding" of fluid dynamics and the prevention of airlock formation, ensuring students master standardized laboratory drainage techniques.
Feature: High-Transparency Glass Matrix Outcome: Enables the "Analyze" phase of experimental monitoring, allowing for real-time visual tracking of filtrate clarity and residue accumulation.
International Logistics & Compliance
StemAids maintains a robust global supply chain framework to ensure the metrological and structural integrity of fragile laboratory glassware:
Packaging: Export-grade seaworthy crating (ISPM-15 compliant) utilizing multi-layer shock-absorption inserts to prevent fracture during intermodal transit.
Documentation: Includes Manufacturer’s Authorization Form (MAF), batch-specific Certificate of Conformity, and technical User Manuals in English.
Durability: Tropicalized design tested for operation in demanding climates (up to 45°C/90% Humidity), ensuring no degradation of glass clarity or structural bonding over extended storage.
Direct OEM Sourcing Advantages
Procuring through the StemAids vertical manufacturing channel provides institutional stakeholders with definitive technical assurance and supply chain stability:
Vertical Quality Integration: Total oversight of the annealing and glass-forming cycles ensures a low-strain matrix, significantly extending the mechanical lifecycle of the funnel.
In-house Precision Calibration: Every unit is inspected for dimensional accuracy to ensure strict adherence to ISO 4798 tolerances for stem length and cone angle.
Batch-Tested for Uniform Reliability: Production runs undergo rigorous thermal-shock testing to meet the definitive standards required for international educational tenders.
Direct Factory Spares Availability: Guaranteed long-term availability of specific diameters and stem lengths to ensure laboratory asset continuity and prevent downtime.
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