Hare's Tube Apparatus

Product Code : SCL-AM-12258

Hare's Tube Apparatus (SKU SCL-AM-12258), also called Hare's apparatus, compares the densities of two liquids: suction on the short limb of a three-limbed tube draws both liquids up, and the ratio of their column heights gives their relative density. It is a standard properties-of-matter practical in school and college physics labs. Science Lab Supplies manufactures the apparatus at Plot 448, HSIIDC Industrial Area, Saha, Ambala, India, and its factory deals directly with schools, colleges, tender contractors and distributors.

Specifications

All specifications of the apparatus are tabulated below. Briefly, a three-limbed tube is mounted on a polished stand beside a 45 cm metre scale that starts from zero at the bottom and is divided in centimetres and millimetres; the rubber tube and pinch cock for the suction line are not supplied.

Applications and Experiments for the Hare's Tube Apparatus

When suction raises two liquids from separate beakers, the pressure at the base of each column is the same, so the taller column belongs to the less dense liquid. Comparing heights on the 45 cm scale therefore gives relative density directly, a classic exercise in school physics lab equipment in India.

• Class 9 and 11 physics: relative density and specific gravity of a liquid compared with water.
• Hydrostatic pressure and the relation between liquid density and column height, alongside the U-Tube Manometer on Stand Table Model.
• Comparing results with another density method such as the Nicholson Hydrometer.
• B.Sc. and diploma properties-of-matter practicals with observation tables and calculations.

Work under teacher or technician supervision: never apply suction by mouth, use hazardous liquids only where the laboratory permits, and handle the glass tube carefully.

Standard Scope of Supply

One Hare's Tube Apparatus with its three-limbed tube, mounted on the polished stand with the 45 cm metre scale. The rubber tube and pinch cock are not supplied, and the liquids and beakers come from the laboratory; a spare tube can be ordered on demand with the apparatus.

Packing, MOQ and Lead Time

You can ask us to quote one apparatus or a set for every practical group, with spare tubes if wanted. Science Lab Supplies replies with the packing, delivery time and price for that quantity, and manometers, hydrometers or overflow cans can be priced on the same quotation.

As the holder of an Importer-Exporter Code, Science Lab Supplies can ship to buyers in Tanzania, Uganda, the UAE, Saudi Arabia, Oman and the Philippines. For a price, contact the team via the contact page, list items in the enquiry cart, or see the lab tender page when buying through a tender.

Frequently Asked Questions

What is the Hare's Tube Apparatus used for?
It compares the densities of two liquids. Suction draws both up the connected limbs, and because the columns balance the same pressure difference, the ratio of their heights equals the inverse ratio of their densities.

What scale does it have?
The apparatus carries a 45 cm metre scale with zero at the bottom, divided in centimetres and millimetres, so both column heights can be read directly from the base.

Are the rubber tube and pinch cock included?
No. The apparatus is supplied without rubber tube and pinch cock, so arrange suitable tubing and a clip for the suction line. A spare glass tube is available on demand.

Is Science Lab Supplies the manufacturer or a trader?
Science Lab Supplies is the manufacturer. The Hare's tube apparatus is assembled in its Saha, Ambala factory in India, and you receive the quotation from the manufacturing unit itself rather than from a dealer.

Related Density and Fluid Pressure Apparatus

These Properties of Matter and general physics items cover relative density, liquid pressure and Archimedes' principle, the topics taught alongside Hare's method, so a complete hydrostatics bench can be built around this apparatus and placed on one quotation for the laboratory.

• Hare Apparatus — three-limbed tube on a polished stand with a 45 cm scale, in the Properties of Matter range.
• Liquid Level Apparatus — four differently shaped glass tubes joined at the base on a bakelite stand.
• U-Tube Manometer on Stand, Wall Hanging Type — wooden base with a 15 cm scale and metre rule.
• Fluid Pressure Apparatus (Spouting Cylinder) — 400 x 68 mm cylinder with three outlets at different heights.
• Simple Pascal Law Experiment (Pressure String) — holed ball and piston showing pressure transmitted equally.
• Overflow Vessel (Eureka Can) — G.I. sheet can with flared top edge for Archimedes experiments.
• Instruments for Measuring the Density of Solids and Liquids — regular and irregular bodies, digital scale, 100 ml container and 500 ml beaker.

Browse the full Applied Mechanics range, the Properties of Matter range for hydrostatics apparatus, or all physics lab equipment.

Last updated: 9 October 2026