Separating Funnel
Product Code : SCL-CLE-11897
The StemAids Separating Funnel (also known as a partition funnel) is a specialized laboratory instrument engineered for the separation of immiscible liquids based on their density. Featuring a characteristic pear-shaped (pyriform) body and a precision-bore stopcock, it allows for the controlled isolation of distinct chemical phases. Manufactured to ISO 4800 standards, it is an essential tool for Organic Chemistry, Forensic Science, and Environmental Analysis laboratories for solvent extraction and purification processes.
Technical Specifications
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Tender Specification |
OEM Technical Detail |
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Material |
Borosilicate Glass 3.3 (Expansion 33) or Chemical-Resistant Plastic |
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Capacities |
50ml,100ml,250ml,500ml,1000ml,2000ml |
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Body Shape |
Pear-shaped (standard) or Cylindrical (specialized) |
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Stopcock Type |
PTFE (Teflon) – grease-free, or Ground-glass (requires lubrication) |
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Closure System |
Ground-glass stopper or Polyethylene (PE) interchangeable stopper |
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Graduations |
Permanent white enamel (on graduated models) |
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Chemical Resistance |
High resistance to acids, alkalis, and organic solvents |
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ISO Compliance |
Manufactured under ISO 9001:2015 and ISO 4800 standards |
Key Pedagogical & Laboratory Outcomes
- Polarity Interface: Facilitates student understanding of "Like Dissolves Like." Learners identify how polar solvents (e.g., water) and non-polar solvents (e.g., oil or ether) form distinct layers.
- Extraction Quantification: Enables the study of Partition Coefficients (KD); learners apply mathematical formulas to calculate the efficiency of solute transfer between phases after vigorous shaking and venting.
- Density Analysis: Supports the analysis of "Relative Buoyancy"; students evaluate which liquid forms the upper vs. lower layer based on their specific gravity (e.g., Chlorinated solvents usually settle at the bottom).
- Purification Evaluation: Allows students to evaluate washing and extraction protocols, such as removing acidic impurities from an organic product using a bicarbonate wash.
International Logistics & Compliance
StemAids ensures comprehensive OEM readiness for global institutional procurement:
- Packaging: Export-grade, high-protection packaging. Each funnel is individually cushioned in bubble wrap and nested in custom-fitted partitions to prevent breakage of the delicate stem or neck.
- Documentation: Includes Manufacturer’s Authorization Form (MAF), Certificate of Conformance (CoC), and a guide for PTFE stopcock maintenance.
- Durability: The Borosilicate 3.3 glass is stress-relieved to withstand the internal pressure buildup that occurs during the mixing of volatile organic solvents.
Direct OEM Sourcing Advantages
Procuring StemAids Separating Funnels directly ensures vertical manufacturing control:
- Leak-Proof Precision: Direct oversight of the stopcock assembly ensures a vacuum-tight seal, preventing the loss of valuable or hazardous reagents during the extraction process.
- PTFE Excellence: We utilize premium PTFE stopcocks that offer a smooth turning action without the need for grease, preventing the contamination of organic samples.
- Direct Factory Inventory: Guaranteed availability of various sizes and replacement stoppers to ensure consistent lab operations.
- Quality Assurance: Every funnel is hydrostatically tested to ensure structural integrity and the absence of "pinhole" leaks in the stopcock housing.