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Capillary Tube
Capillary Tube (Product Code: MSRC1073) is a fine-bore glass tube, 100 mm long with a diameter of 1.3-1.6 mm, used where only a tiny quantity of sample is needed. Its main job in teaching and quality-control labs is melting point determination of solid organic compounds, and it is also used for boiling point checks and for spotting samples in chromatography. Chemistry departments, pharmacy colleges and testing labs order it in bulk from Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India, which supplies it as a chemistry lab instruments supplier alongside the matching melting point apparatus.
Specifications
| Parameter | Detail |
|---|---|
| Model | SCL173 |
| Material | Glass |
| Length | 100 mm |
| Diameter | 1.3-1.6 mm |
| Colour | Clear |
| Properties | Heat resistant, chemical resistant |
| Application | Laboratory use |
Typical Use
To find a melting point, one end of the capillary is sealed in a small flame if it is open, the dry powdered sample is tapped into the tube to a short, compact column, and the tube is placed in a melting point apparatus or tied beside the bulb of a thermometer in a Thiele tube. The clear glass lets the student see the exact moment the solid starts to liquefy and when it has fully melted, which is how purity is judged in organic preparations. Keep the sample column short and well packed for a sharp reading.
The same tubes are handy for applying small, tight spots of solution in a paper chromatography kit for school practicals, and a capillary sealed at one end sits inside a fusion tube for boiling point work. Because the sample usually stays fused inside after a melting point run, capillaries are treated as consumables and replaced after each determination; store unused tubes in a closed container so dust does not enter the bore.
Supplier
Jain Scientific Equipments Private Limited, which trades as ScienceLab from Ambala in Haryana, supplies these capillaries as part of its glass consumables range for teaching and testing labs. Buyers can combine them in one order with melting point apparatus and thermometers. Visit the company profile to learn more about ScienceLab.
Related Chemistry Lab Equipment
These products are used with capillary tubes for melting and boiling point determination:
- Apparatus Melting Point — heats the filled capillary for melting point readings.
- Digital Melting Point Apparatus — an electrically heated option with a digital temperature display.
- Thiele Tube — the traditional oil-bath method using a thermometer and capillary.
- Fusion Tube — holds the liquid sample when a capillary is used for boiling point work.
- Capillary Tube Set — an alternative listing for labs that need a set of capillaries.
For more glassware and consumables, see the Chemistry Lab Equipment category.
Frequently Asked Questions
What are the length and bore of these capillaries?
Each tube is 100 mm long with a diameter of 1.3-1.6 mm, in clear glass.
Are they open at both ends or sealed at one end?
Please confirm the end finish you need when you enquire. A tube that is open at both ends can easily be sealed at one end in a small burner flame before filling.
Will they fit my melting point apparatus?
Most apparatus state the capillary diameter they accept. Compare it with the 1.3-1.6 mm size here, or send us the model details through the contact page and we will check.
Can a capillary be reused?
For melting points, no — the sample remains fused in the tube, so use a fresh capillary for each reading. This is why labs buy them in larger quantities.
Are they suitable for heating and chemical contact?
Yes. The glass is heat resistant and chemical resistant for normal melting point, boiling point and spotting work.
Can you supply bulk or export orders?
Yes. ScienceLab supplies institutions in India and international markets. Share the quantity and destination for a quotation.
Request a Quote
Send your Capillary Tube requirement through the contact page, or add it to the enquiry cart with a melting point apparatus or other items for a combined quotation.
Last updated: 24 September 2026
