Round Bottom Flask
Product Code : SCL-CLE-11928
The StemAids Round Bottom Flask (RBF) is a critical laboratory vessel engineered for chemical reactions, distillations, and heating applications. Its characteristic spherical shape is specifically designed to withstand high pressure and ensure uniform heat distribution, making it superior to flat-bottom variants for vacuum operations and vigorous boiling. Manufactured to ISO 1773 and ISO 4797 standards, it is the primary interface for organic synthesis and solvent recovery in University and Research laboratories.
Technical Specifications
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Tender Specification |
OEM Technical Detail |
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Material |
Grade A Borosilicate Glass 3.3 (Expansion 33) |
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Design |
Spherical body for uniform stress distribution |
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Capacities |
50ml,100ml,250ml,500ml,1000ml,2000ml,5000ml |
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Joint Types |
Plain Rim or Ground-Glass Joints (Standard 14/23, 19/26, 24/29) |
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Neck Configurations |
Single, Two, Three, or Four-neck available |
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Thermal Resistance |
High resistance to thermal shock and localized "hot spots" |
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Vacuum Rating |
Engineered to withstand full vacuum without implosion |
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ISO Compliance |
Manufactured under ISO 9001:2015 and ISO 1773 standards |
Key Pedagogical & Laboratory Outcomes
- Thermal Interface: Facilitates student understanding of Convective Heating. The absence of sharp corners allows liquids to circulate freely; learners identify how this prevents "bumping" and ensures a steady boil during distillation.
- Vacuum Quantification: Enables Evaporation under Reduced Pressure; learners apply the flask to Rotary Evaporators, recognizing that the spherical geometry is the strongest shape for resisting external pressure.
- Synthesis Analysis: Supports the analysis of "Multi-Component Reactions"; multi-neck versions allow students to evaluate the simultaneous use of reflux condensers, thermometers, and addition funnels.
- Distillation Evaluation: Serves as the primary boiling flask in Fractional Distillation; students evaluate the purity of fractions collected by monitoring the vapor temperature at the flask's neck.
Operational Best Practices
- Support Mechanism: Unlike flat-bottom flasks, the RBF requires a cork ring or a heating mantle for support. It should never be placed directly on a flat bench while containing liquids.
- Uniform Heating: For best results, use a heating mantle or an oil/sand bath. Direct flame should be avoided unless using a wire gauze to spread the heat.
- Clamping: Always clamp the flask by the neck using a boss-head and clamp to ensure stability, especially when connected to heavy condensers.
International Logistics & Compliance
StemAids ensures comprehensive OEM readiness for global institutional procurement:
- Packaging: Export-grade, high-density packaging. Flasks are nested in custom-cut, shock-absorbent partitions. Larger sizes (2L+) are double-boxed to ensure zero-breakage during maritime or air transit.
- Documentation: Includes Manufacturer’s Authorization Form (MAF), Certificate of Conformance (CoC), and Material Safety Data Sheet (MSDS).
- Durability: The Borosilicate 3.3 glass is stress-relieved in a lehr, ensuring it can withstand the extreme temperature gradients required for "Reflux" operations.
Direct OEM Sourcing Advantages
Procuring StemAids Round Bottom Flasks directly ensures vertical manufacturing control:
- Precision Ground Joints: Direct oversight of diamond-honing ensures vacuum-tight seals, preventing the loss of volatile solvents or the ingress of air into sensitive reactions.
- Wall Thickness Uniformity: We ensure the spherical wall has a consistent thickness, which is vital for maintaining structural integrity under vacuum.
- Direct Factory Inventory: Guaranteed availability of specialized multi-neck flasks and heavy-wall variants for high-pressure applications.
- Quality Assurance: Every flask is inspected for internal "strain" using polarized light to ensure it is safe for high-temperature use.
