Precision-engineered Glass Capillary Tubes are essential for micro-volume liquid handling, melting point determinations, and specialized microbiology assays. These tubes are crafted from high-quality borosilicate glass, ensuring excellent chemical resistance and thermal stability.
They are typically available in two varieties: Heparinized (red coded) to prevent blood clotting during collection, and Non-Heparinized (blue coded) for general laboratory use.
Key Features
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High Precision: Uniform bore diameter ensures accurate capillary action and consistent volume collection.
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Borosilicate 3.3 Glass: Superior clarity and resistance to thermal shock and chemical corrosion.
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Color-Coded Ends: Easy identification between treated (Heparin) and untreated tubes.
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Fire-Polished Ends: Smooth edges prevent damage to samples and reduce the risk of injury during handling.
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Standard Dimensions: Usually 75mm in length with an internal diameter of approximately 1.1mm to 1.2mm.
Technical Specifications
| Feature | Details |
| Material | Borosilicate Glass (Type 1) |
| Length | 75 mm (Standard) |
| Inside Diameter | 1.1 mm – 1.2 mm |
| Outside Diameter | 1.5 mm – 1.6 mm |
| Packaging | Vials of 100 or 500 pieces |
| Sterility | Available in Sterile or Non-Sterile |
Common Applications
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Hematology: Micro-hematocrit determinations and blood gas analysis.
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Microbiology: Precise transfer of minute microbial cultures or reagents.
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Chemistry: Melting point capillary tubes for identifying crystalline substances.
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Sample Collection: Harvesting small volumes of liquid via capillary action without the need for a pump.
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