Test Tube Holder
Product Code : SCL-CLE-11947
The StemAids Test Tube Holder is a fundamental safety instrument designed to provide a secure grip on test tubes during heating or when handling corrosive substances. By extending the distance between the user’s hand and the reaction zone, it serves as a critical barrier against thermal burns and chemical splashes. Manufactured from high-tensile spring steel or polished brass, it is engineered to maintain a firm grip on tubes of various diameters without applying excessive pressure that could lead to glass fracture.
Technical Specifications
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Tender Specification |
OEM Technical Detail |
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Material |
Chrome-plated Spring Steel or Polished Brass |
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Design |
Self-closing spring mechanism with finger grips |
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Capacity |
Fits tubes from 10mm to 30mm diameter |
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Length |
Standard 150mm–200mm for optimal safety distance |
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Feature |
Available with or without a wooden handle for enhanced insulation |
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Jaw Type |
Precision-curved jaws for multi-point contact |
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Durability |
Rust-resistant finish; maintains spring tension after repeated use |
Key Pedagogical & Laboratory Outcomes
- Safety Interface: Facilitates student understanding of Laboratory Risk Management. Learners identify the holder as the primary tool for moving vessels into and out of open flames (Bunsen burners).
- Thermal Application: Enables the study of Endothermic Reactions; learners apply the holder to heat solutions to boiling point while maintaining a safe "pointing away" orientation.
- Chemical Analysis: Supports the analysis of "Exothermic Dissolution"; students evaluate the heat generated when adding concentrated acids to water, using the holder to stay clear of the reaction neck.
- Technique Evaluation: Provides a platform for evaluating correct heating methods; students practice the "gentle agitation" technique—moving the tube in and out of the flame—which is made safer and more controlled by the ergonomics of the holder.
Operational Safety Guidelines
- Placement: Always attach the holder near the top (rim) of the test tube. This prevents the holder itself from getting too hot and ensures the liquid inside has room to expand.
- Orientation: When heating, always point the mouth of the test tube away from yourself and others to prevent injury from "bumping" or sudden ebullition.
- Tension Check: Before use, ensure the spring is functioning correctly and the jaws are aligned to prevent the tube from slipping.
International Logistics & Compliance
StemAids ensures comprehensive OEM readiness for global institutional procurement:
- Packaging: Export-grade bulk packaging. Holders are packed in nested boxes to prevent the spring mechanisms from tangling or deforming during maritime transit.
- Documentation: Includes Manufacturer’s Authorization Form (MAF), Certificate of Conformance (CoC), and Laboratory Safety Posters.
- Durability: The high-tensile steel used is fatigue-tested, ensuring the "memory" of the spring remains consistent over thousands of compression cycles.
Direct OEM Sourcing Advantages
Procuring StemAids Test Tube Holders directly ensures vertical manufacturing control:
- Insulated Grip Options: Direct oversight ensures our Wooden Handle models use kiln-dried, non-conductive wood that stays cool even during prolonged heating sessions.
- Burr-Free Finishing: We ensure all edges are tumbled and polished to remove sharp metal burrs, protecting both the student’s hands and the glass surface of the tubes.
- Direct Factory Inventory: Guaranteed availability of both Cross-Point (self-closing) and Side-Squeeze styles.
- Quality Assurance: Every batch is "grip-strength tested" to ensure it can support the weight of a 30mm boiling tube filled with a high-density liquid like 25\text{%} saline.