Food Calorimeter

It is used to determine the absolute heat of combustion of
foods (calorific values). It may also used to find out relative
values of heat of combustion of a series of foods by
comparing the rise of temperature of a fixed volume of
water when a constant mass of a substance is burnt
completely.
Apparatus Comprises of two assemblies:
a) Calorimeter Unit b) Base Unit
The Calorimeter unit carries heat exchanger unit and base
unit has crucible holder, ignition system etc. etc.
a) Calorimeter Unit
Comprises of a glass water jacket 150 x 80 mm (Ht x dia)
surrounding a combustion chamber integral with it and open
at its base. This combustion chamber is connected to a
copper spiral heat transfer tube. The upper end of this tube
passes through a hole in the lid on top and when in use is
connected to a filter pump to draw the products of
combustion through the copper spiral. A wire stirrer also
passes through the cover and a hole with a bored rubber
stopper is provided to accommodate a thermometer,
Supplied complete with thermometer -5 to + 50° C x 0.10C
(Mercury in glass)

b) Base Unit
Metal disc about 100 mm dia with a boss for mounting on
12mm retort rod (without rod). The unit works as the base
of the combustion chamber and has inlet tubule 6 mm
diameter for oxygen supply (oxygen supply is necessary to
completely bum the food) and pair of pillars carrying low
voltage igniter coil. Also having a moveable crucible support
to enable the crucible to raise to the level of igniter coil
from outside the assembled apparatus Supplied without
retort stand, crucible or spirit lamp.

Spare and Accessories
Spare borosilicate glass calorimeter jacket
(150 x 80mm, L x Dia) (HT-1536/1)
Spare igniter coil pack of 5 PCS.(HT-1536/2)
Nickel Crucible, one PC.(HT-1536/3)
Retort stand & base: Tripod 'A' base with rod(HT-1536/4)
Spirit lamp for volatile samples(HT-1536/5)
Low Voltage Supply Unit 12 V: PI. see Power Supply Section.
Oxygen Gas supply with regulator: To be obtained locally.