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Written by Palak Mall, Senior Content Writer · reviewed by Arvind Kumar, Lab Equipment Specialist, 12+ years in laboratory supply · updated 17 October 2026

Heat Capacity and Heat Conduction lists 19 items for calorimetry and thermal conductivity work in school and college physics labs: eight calorimeters and an immersion heater, seven conduction apparatus from the wax-melting demonstrations to Searle’s and Lee and Charlton’s methods, and three items for expansion and fixed-point work. The dimensions below are the ones given in each item’s listing.

Calorimeters

Calorimeter	What the listing specifies	Thermometer included
Joule’s Calorimeter	Aluminium vessel 75 x 50 mm, lagged inside a 100 x 75 mm outer vessel; ebonite lid with wire stirrer and 4 mm terminals to a constantan coil of about 6 ohms, for 0.5 A (1 A maximum); for the specific heat capacity of a liquid by the electrical method	No
Electric Double Wall Calorimeter	Inner 250 ml and outer 900 ml aluminium vessels; transparent cover with two terminals carrying a 5 watt heating coil, and holes for a thermometer and stirrer	No
Continuous Flow Calorimeter	Glass tube 100 mm long with a heating wire and screw terminals; water flows through at a rate kept constant by an adjustable tank, and two thermometers read the rise; wooden base about 625 x 130 mm; for the specific heat of water or similar liquids	Listed as supplied with thermometer
Calorimeters, Metal Blocks Set	Four 1 kg cylindrical blocks of copper, brass, aluminium and iron, each drilled with a 12.5 mm hole for an immersion heater and a 7.5 mm hole for a thermometer; adjusted to ±2 per cent; for the specific heat capacity of metals	Not stated; heater not included
Copper Calorimeter Set	Inner copper vessel 75 x 50 mm inside an outer 100 x 75 mm vessel, insulated by the air gap; inner vessel stands on three legs on rubber stoppers; copper lid with thermometer tubule and stirrer slit	Yes, with stirrer
Wooden Outer, Calorimeter Set	Copper vessel 75 x 50 mm in a polished wooden box lined with felt; sliding cover with openings for stirrer and thermometer	Yes, with stirrer and a removable thermometer stand
Calorimeter, Copper	Polished copper, 75 x 50 mm, with a wood or plastic lid, rubber stopper and stirrer	Not stated
Friction Calorimeter Unit	Brass cylinder with a V pulley in its base, on a steel shaft in a bearing block; cork-lined friction arms and thermometer support on a pillar; wooden base	Support only

The Immersion Heater is a sheathed 12 V, 50 W (nominal) element in a 150 mm stainless steel tube with 180 mm heat-resisting leads, developed for the metal block calorimeters. The block set is listed without it, so order one heater per block that will be heated at the same time.

Thermal conductivity apparatus

Apparatus	What it compares or measures	What the listing specifies
Heat Conductivity Apparatus	Five metals by the order in which wax melts	Hexagonal brass hub with rods of brass, copper, aluminium, mild steel and stainless steel radiating out; wax recesses at the rod ends; sixth side has a rod with an insulating handle
Thermal Conductivity of Metals	Four metals by the order in which wax melts	Strips of copper, iron, aluminium and brass meeting at the centre of a wooden frame, with wax recesses at the outer ends
Ingen Hausz’s Apparatus	Six metals heated from a water trough	Epoxy-coated sheet metal trough on four detachable legs; rods of copper, iron, lead, aluminium, steel and zinc through rubber bungs; seventh hole for filling or a thermometer
Conductivity Apparatus	Different metals, with indices that hold the reading	Metal rods mounted vertically at the base of a cylindrical copper vessel with a thick rim for a retort-stand ring; indices supplied
Thermal Conductivity Rods	Rods for class sets	Six sets of six rods, 250 mm x 3 mm, one each of iron, copper, aluminium, lead, brass and zinc per set (36 rods)
Searle’s Thermal Conductivity of Copper Apparatus	Conductivity of a good conductor	Copper bar 25 mm in diameter and 300 mm long, steam jacket at one end and copper water-cooling spiral at the other, felt insulation in a wooden case with a removable front; supplied without boiler or thermometer
Lee and Charlton Apparatus	Conductivity of bad conductors in thin layers	Brass slab with a hollow steam cylinder of the same diameter, both with thermometer holes, hung from a 125 mm ring on a retort stand with a 600 mm rod; glass and plastic specimens and a 3 mm annulus for liquids

Expansion and fixed points

Expansion of Liquids Apparatus: five glass bulbs with long necks graduated in millimetres, set in a water trough so that all five liquids are heated equally and their rise read on the scales.
Absolute Expansion of Mercury Apparatus: glass limbs in jackets about 460 x 25 mm, angled at their upper ends into two short limbs against a scale, on a stand. Supplied without mercury.
Hypsometer, Copper: for checking the upper fixed point of thermometers and boiling points at pressures other than atmospheric; steam-jacketed inner tube, manometric glass tube and drain; overall 300 x 100 mm.

Related ranges

This range is part of Heat & Thermodynamics. The steam generator, copper steam heater and heat of steam apparatus that feed several of these items are listed under Energy Transfer. Ball and ring, bar and gauge and linear expansion apparatus are under Thermal Expansion and Thermo Electricity.

Questions buyers ask

Which calorimeter measures the specific heat capacity of a liquid?
Three are listed for liquids. Joule’s Calorimeter and the Electric Double Wall Calorimeter heat a fixed quantity with a coil. The Continuous Flow Calorimeter heats a steady stream of water flowing through a glass tube.

Are thermometers supplied?
With the copper calorimeter set, the wooden outer set and the continuous flow calorimeter, yes. Joule’s calorimeter, the electric double wall calorimeter and Searle’s apparatus are listed without one, so add thermometers to the order.

Which apparatus needs a steam supply?
Searle’s apparatus is supplied from a steam boiler, which is not included, and the Lee and Charlton apparatus has a hollow cylinder with steam inlet and outlet tubes.

Request a quotation

Send the item names and quantities through the contact page, with the thermometers, immersion heaters and steam source needed for each item, so they are priced on one quotation.