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Test Tube 25 x 200mm
Test Tube 25 x 200mm (Product Code: SCI-650/086) is a large rimless (edgeless) borosilicate glass test tube used for heating, boiling and reacting bigger volumes than ordinary test tubes can hold, in chemistry and biology laboratories. At 25 x 200 mm it is the size often called a boiling tube, with room inside for a thermometer, stirrer or delivery tube. It is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Type | Edgeless (rimless) glass test tube |
| Size | 25 x 200 mm |
| Material | Borosilicate glass |
| Colour | Transparent |
| Resistance | Chemical and heat resistant |
| Product code | SCI-650/086 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the 25 x 200 mm Test Tube Used For?
Large test tubes are used to boil liquids with less risk of spurting, for cooling-curve and melting-point experiments with a thermometer inserted, to grow crystals, to prepare small quantities of gas with a stopper and delivery tube, and for demonstrations the whole class must see. Their width also makes them easier to fill and clean than narrow tubes.
As part of school chemistry lab equipment in India, the tube should be clamped on a laboratory stand for prolonged heating rather than held by hand. Fill it no more than about a third when boiling, and let it cool before washing.
OEM Manufacturer
This large test tube is made by Jain Scientific Equipments Private Limited, which trades under the ScienceLab name and acts as the OEM (original equipment manufacturer). Production is at the company's own licensed factory at Saha, Ambala, Haryana, India, and the tubes go out factory-direct to institutions, dealers and importers in India and international markets.
Replacement stock and repeat orders are arranged by the manufacturer itself — just ask us. The ScienceLab profile has more company information.
Related Laboratory Equipment
Heating and cooling-curve experiments in this large tube usually need:
- Laboratory Thermometers — inserted to follow temperature changes
- Rubber stoppers with holes of different diameters — carry a thermometer or delivery tube
- Laboratory Stand with Accessories — clamps the tube for prolonged heating
- Tube Brush — cleans the tube after use
- Test Tube 12 x 100 mm — a small rimmed tube for spot tests
Find more test tubes and apparatus in the Laboratory Equipment category.
Frequently Asked Questions
What size is the Test Tube 25 x 200mm?
The Test Tube 25 x 200mm (SCI-650/086) measures 25 x 200 mm and is edgeless, or rimless. This large size, often called a boiling tube, holds more liquid than standard test tubes and fits a thermometer inside.
What is the Test Tube 25 x 200mm made of?
The Test Tube 25 x 200mm is made of transparent borosilicate glass that is chemical resistant and heat resistant, suited to boiling liquids, heating solids and observing reactions clearly in teaching laboratories.
Why choose a rimless test tube of this size?
The Test Tube 25 x 200mm has a plain rimless mouth that takes a rubber stopper snugly, useful for fitting thermometers or delivery tubes. Its wide bore also makes filling, stirring and cleaning easier than with narrow tubes.
Who manufactures the Test Tube 25 x 200mm?
The Test Tube 25 x 200mm is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, at its own licensed factory at Saha, Ambala, Haryana, India. Quotations and repeat orders come directly from the manufacturer.
How should the Test Tube 25 x 200mm be heated?
Clamp the Test Tube 25 x 200mm on a laboratory stand, fill it no more than about a third, and heat it gently while pointing the mouth away from people. Allow it to cool before washing.
What should I send to get a quotation for these tubes?
For the Test Tube 25 x 200mm, send the code SCI-650/086, the quantity, any stoppers, thermometers or holders to include, and the delivery location through the contact page.
Request a Quote
Request a quotation for the Test Tube 25 x 200mm through the contact page or place it in the enquiry cart. The manufacturer issues the quote directly.
Last updated: 24 September 2026
