Sale
In Stock
Laboratory Stalagmometer Tube
Original price was: ₹70.00.₹25.00Current price is: ₹25.00.
Quick answer: A stalagmometer tube is used to measure the surface tension of a liquid by counting the number of drops formed as a fixed volume of the liquid passes through its precisely calibrated tip.
The technique relies on the fact that the size of a drop forming at a narrow tip is closely related to the surface tension of the liquid: liquids with higher surface tension form larger, heavier drops, while those with lower surface tension form smaller, more numerous drops from the same volume. By carefully counting the number of drops released as a known volume of liquid drains through the tube’s tip, the surface tension of the liquid can be calculated or compared against a reference liquid of known surface tension.
Because the result depends on consistent drop formation, the calibrated tip and clean, dry tube surfaces are essential to getting comparable, reliable readings between different liquids or repeated trials.
Technical Specifications
| Parameter | Detail |
|---|---|
| Body material | Laboratory glass |
| Design | Graduated tube with a precisely calibrated drop-forming tip |
| Function | Measures surface tension via the drop-count method |
| Typical use | Physical chemistry practicals and surface tension research |
Applications
- Measuring the surface tension of water, solvents and solutions
- Comparing relative surface tension between different liquids
- Physical chemistry teaching demonstrations of intermolecular forces
- Research investigations into the effect of solutes on surface tension
Care & Handling
- Clean the tube thoroughly and ensure the tip is free of residue before each measurement
- Handle the calibrated tip carefully, as damage will affect drop formation and results
- Rinse with the test liquid before taking a measurement to avoid contamination from residual liquid
- Store upright and protected from dust and knocks
Why Choose LabEquip
LabEquip supplies physical chemistry glassware alongside our wider lab glassware range and chemistry lab equipment to schools, colleges and research laboratories across India. For bulk or institutional requirements, contact us and our team will help confirm the right setup for your practical work.
Frequently Asked Questions
What is a stalagmometer tube used for?
It is used to measure the surface tension of a liquid by counting the number of drops formed as a fixed volume of the liquid passes through its calibrated tip.
How does the stalagmometer method work?
A liquid is drawn up into the tube and allowed to drip out through the narrow calibrated tip; the number of drops formed from a known volume is related to the liquid’s surface tension.
Why is the tip of the tube important?
The tip is precisely shaped and calibrated so that drop size is consistent and comparable between measurements, which is essential for accurate surface tension determination.
What kind of experiments use a stalagmometer?
It is used in physical chemistry practicals and research investigating the surface tension of different liquids or solutions.
Can the stalagmometer be used to compare different liquids?
Yes, comparing drop counts for different liquids under the same conditions is a common way to compare their relative surface tensions.
Does LabEquip supply stalagmometer tubes for bulk or institutional orders?
Yes. LabEquip supplies laboratory stalagmometer tubes to schools, colleges and laboratories across India, including bulk and institutional orders. Contact us for a quotation.
Last Updated: September 2026
Bestsellers
Sale
Sale
