Educational Stalagmometer Manufacturer,Supplier and Exporter in India

Product Code : SCL-BP-12564

The Educational Stalagmometer is a capillary glass laboratory instrument used for comparing the surface tension of liquids by counting drops released from a defined volume. It is suitable for school chemistry labs, college physical-chemistry practicals, laboratory technicians, science departments, distributors, and institutional procurement buyers.

Product Description

Educational Stalagmometer from School Equipments India is intended for supervised experiments on surface tension, drop formation, capillary flow, cohesion, and intermolecular forces. It gives students a manual, observable method for comparing a test liquid with a reference liquid such as water.

A typical stalagmometer has a central bulb, upper and lower reference marks, a narrow capillary section, and a delivery tip. The operator fills the instrument above the upper mark, allows the liquid to flow naturally, and counts drops while the meniscus moves between the two marks. Exact capacity, glass type, calibration status, dimensions, and accessories should be confirmed before publication or quotation.

Key Features

• Surface-tension comparison: supports relative surface tension measurement using the drop-count method.
• Capillary glass design: helps form controlled drops from a narrow delivery tip.
• Reference-mark measurement: uses upper and lower marks to define the tested liquid volume.
• Manual operation: requires no electrical supply, sensor, or digital display.
• Teaching-lab relevance: supports lessons on cohesive force, liquid behaviour, surfactants, and physical chemistry.
• Reusable apparatus: can be cleaned, dried, inspected, and reused after compatibility checks.
• Procurement-safe specification: final capacity, glass grade, accessories, and documentation must be verified before order.

Technical Specifications

What's Included in the Kit

• 1 × Educational Stalagmometer 
• Protective case, stand, clamp, suction bulb, beaker, reference liquid, density-measurement accessory, and instruction sheet
• Certificate, packing list, or product datasheet

Applications / Uses

• Comparing surface tension of compatible liquids
• Performing physical-chemistry experiments by drop-count method
• Studying the effect of solutes, detergents, or surfactants on surface tension
• Demonstrating cohesion, capillary flow, and drop formation
• Supporting college practicals involving density and surface-tension calculations
• Supporting tender-based procurement for chemistry lab glassware

How to Use the Educational Stalagmometer

1. Clean the stalagmometer thoroughly and check that the capillary tip is not blocked.
2. Rinse the internal surface with a small quantity of the test liquid.
3. Mount the instrument vertically using a suitable stand and clamp.
4. Use a suction bulb or approved filling device to draw liquid above the upper mark.
5. Allow the liquid to flow naturally without squeezing or applying extra pressure.
6. Start counting drops when the meniscus reaches the upper reference mark.
7. Stop counting when the meniscus reaches the lower reference mark.
8. Repeat with the reference liquid at the same temperature and compare results using the approved formula.

Safety note: Never fill the stalagmometer by mouth. Wear suitable PPE and handle volatile, corrosive, flammable, or hazardous liquids according to the SDS and laboratory SOP.

Care & Maintenance

• Clean immediately after use because residue changes wetting and drop formation.
• Rinse thoroughly so no detergent or previous-sample residue remains inside the capillary.
• Do not push wires, needles, or rigid tools into the narrow delivery tip.
• Store clean and dry in a protected case or secured glassware cabinet.

Why Choose School Equipments India

School Equipments India manufactures and exports scientific laboratory instruments, lab experiment setups, science kits, mathematics kits, didactic models, and STEM models. Its chemistry, glassware, labware, and science-equipment range supports schools, colleges, universities, laboratories, distributors, and institutional procurement buyers. The final stalagmometer capacity, glass grade, accessories, and documentation should be verified for each shipment.

Frequently Asked Questions

What does an Educational Stalagmometer measure?

An Educational Stalagmometer measures relative surface tension by comparing drop counts from a fixed volume of test liquid and reference liquid.

How does the drop-count method work?

The operator counts drops while liquid flows between two reference marks. The drop count is compared with a reference liquid under the same temperature conditions.

Why must the stalagmometer be clean?

Oil, detergent, dust, or previous liquid residue can change wetting behaviour at the capillary tip. That can make drop formation inconsistent and results unreliable.

Is density needed for the calculation?

Yes, many comparative surface-tension calculations use liquid density along with drop count. Follow the formula specified in the laboratory manual or syllabus.

Is it suitable for school chemistry labs?

Yes. It is suitable for supervised school and college chemistry laboratories where teachers control cleaning, filling, vertical alignment, drop counting, and liquid safety.

Does it provide an automatic reading?

No. A stalagmometer is a manual glass instrument. Drop counting, density data, temperature control, and calculation are required for the final comparison.

For related procurement, explore Chemistry Lab Equipment, Chemical Analysis Equipment, Glassware, Plastics & Ceramics, and General Lab Equipment from School Equipments India.