Melting Point Tubes Manufacturer,Supplier and Exporter in India
Product Code : EL-SLE-5728
Jlab Export is a leading Melting Point Tubes Manufacturer,and suppliers in India
Melting Point Tubes (code EL-SLE-5728) are thin-walled capillary tubes, 100 x 1.8 mm, used to hold a small powdered sample while its melting point is measured in school, college and research chemistry labs. The thin wall lets heat reach the sample quickly, so the start and end of melting can be read closely on the thermometer. They are made by Jain Laboratory Instruments Pvt Ltd (JLab) at its works in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Type | Thin-walled capillary tubes |
| Size | 100 x 1.8 mm (length x diameter, as listed) |
| Material | Listed under laboratory glassware; glass type not stated |
| Quality check | Tubes are visually inspected before dispatch |
| Pack quantity | Each (sold individually) — state the number of tubes you need |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 7–10 working days |
| Product code | EL-SLE-5728 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
How Does It Compare with Other JLab Capillary and Fusion Tubes?
| Model | Size listed | Material | Typical use |
|---|---|---|---|
| These tubes (EL-SLE-5728) | 100 x 1.8 mm, thin walled | Glass type not stated | Melting point samples |
| Capillary Tube | Length 100 mm; diameter 1.3–1.6 mm | Glass; heat and chemical resistant | General laboratory capillary work |
| Fusion Tube | Length 75 mm; without rim | Borosilicate glass | Holding the liquid in capillary boiling point tests |
Choose these tubes for melting point work where a thin wall and a 1.8 mm diameter suit your thermometer and bath. The capillary tube listing lists a narrower 1.3–1.6 mm diameter, and the fusion tube is the wider tube used with a capillary when measuring a boiling point.
What Are Melting Point Tubes Used For?
Melting point is the quickest check on the identity and purity of an organic solid, and it is a class 11 chemistry practical. A pure compound melts sharply over a narrow range, while impurities lower the melting point and spread it over a wider range. A little of the dry, finely powdered compound is packed into the bottom of a capillary, the tube is fixed to the thermometer with the sample level with the bulb, and the assembly is heated slowly in a liquid bath or in a melting point apparatus while the temperatures at which melting begins and ends are noted. The same capillaries are used with a fusion tube to find the boiling point of a liquid.
If the tube is open at both ends, seal one end by rotating it in the edge of a flame and let it cool before filling. Press the open end into the powder, then tap or drop the tube, closed end down, so the solid packs into a short, even column. Heat slowly near the expected melting point, use a fresh tube for each run, and dispose of used capillaries in a glass-waste container.
What to Specify When Ordering
- Quantity — the number of tubes you need (minimum order 10 units); practical batches usually need several per student.
- Ends — open at both ends or sealed at one end, if your method requires it.
- Apparatus — thermometers, a melting point apparatus, fusion tubes and a mortar and pestle for grinding samples.
Frequently Asked Questions
What size are these melting point tubes?
100 x 1.8 mm, listed as thin-walled capillary tubes: 100 mm long with a diameter of 1.8 mm. If you need the bore rather than the outside diameter for your method, ask JLab to confirm it.
Are the tubes sealed at one end?
The listing does not say. State in your enquiry whether you want tubes open at both ends or with one end sealed; open tubes can be sealed in a flame before use.
How does a melting point show purity?
A pure solid melts sharply at a characteristic temperature. Impurities lower the melting point and make the solid melt over a wider range, so a broad or low reading suggests the sample needs purifying.
Can they be used for boiling point determination?
Yes. In the capillary method a capillary sealed at one end is placed, open end down, in a little liquid inside a fusion tube and heated with a thermometer.
What should an export enquiry include?
The quantity, whether the tubes should be sealed at one end, the destination country and port or city, delivery terms such as FOB or CIF, packing or labelling needs and any tender reference.
Who manufactures these tubes?
Jain Laboratory Instruments Pvt Ltd (JLab) at its works in Ambala, Haryana, India, quoting directly as the manufacturer.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, a laboratory glassware and chemistry equipment manufacturer in India, incorporated in 2017 and based on Hargolal Road, Ambala, Haryana. Melting point tubes are made at JLab’s own works rather than bought from a trader, so schools, colleges, dealers and importers deal directly with the producer; the tubes are visually inspected before dispatch, and repeat orders are supplied by the same manufacturer. The company holds MSME Udyam registration UDYAM-HR-01-0003849 (manufacturing enterprise) and its Importer-Exporter Code is 3317504552. JLab exports worldwide and ships to buyers in every region — Armenia in Eastern Europe, Lithuania in Northern Europe, Ecuador in South America, Canada in North America and Libya in North Africa are a few examples. Tender information is on the JLab lab tenders page.
Melting and Boiling Point Apparatus
- Melting Point Apparatus — a microprocessor instrument with LCD display and a miniature furnace with automatic heating ramp.
- Thermometers — glass laboratory thermometers for reading bath temperature.
- Fusion Tube — borosilicate tubes for capillary boiling point tests.
- Capillary Tube — 100 mm glass capillaries with a narrower diameter.
- Mortar and Pestle — porcelain mortar and pestle for powdering samples.
See the School Lab Equipment range for other chemistry lab glassware.
Request a Quote
Quotes come direct from the manufacturer. Use the Add To Cart enquiry button on this page, or send the number of tubes (minimum 10 units), whether one end should be sealed, and your delivery location through the contact page.
Last updated: 4 October 2026
