6725 Semi-Micro Calorimeter shown with 6772 Calorimetric Thermometer
S P E C I F I C A T I O N S
Model Number:
6725
Tests Per Hour:
2 – 3
Operator Time Per Test:
6 – 10 Minutes
Precision Classification:
0.4% Class
Jacket Type:
Compensated, Dewar Flask
Oxygen Fill:
Manual
Bucket Fill:
Manual
Bomb Model Options:
1109A, 22mL Manual Valve,
Semi-Micro Bomb
Balance Communication:
USB
Printer Communication:
USB
Network Connection:
TCP/IP via Ethernet
Dimensions (cm):
6725: 22w x 33d x 33h
6772: 56w x 36d x 31h
T
he 6725 Semi-Micro Calorimeter
is a compact, static jacket, calorimeter
designed specifically for measuring the
heat produced by the combustion of
small samples.
Applications
The ability of the 6725 Calorimeter to
produce complete combustion and a
measurable temperature rise with small
samples in the 25 to 200 milligram range
makes this an excellent instrument for use
in marine biology and related ecological
studies where only limited amounts of
sample are available. It also can be used
for testing a variety of heat powders and
pyrotechnic mixtures, particularly slow
burning thermite types which are used
to produce heat. Samples which contain
their own oxidizers can be burned in an
inert atmosphere, while others can be
burned in oxygen.
Thermal Jacket
In the 6725 Calorimeter, the heat leak is
precisely measured during the calor-
imetric pre-period. The associated 6772
Thermometer calculates an effective, aver-
age temperature of the calorimeter sur-
roundings. This temperature value is then
used throughout the test providing the
calorimeter heat leak correction. Effective
static thermal insulation is provided by
using a silvered glass Dewar flask. This
vacuum flask holds the semi-micro bomb
in the test water.
Data Collection
The 6772 Calorimetric Thermometer is
incorporated into the 6725 Semi-micro
Calorimeter. This allows the user to print
to an attached printer, obtain weights from
a balance, and transfer data to a com-
puter. Additionally, the ability of the 6772
Calorimetric Thermometer to act as a data
logger is very useful when studying mate-
rials with very small energy changes.
6725 Ordering Guide
6725 Semi-Micro Calorimeter
Model No.
Voltage
Description
6725EA / EF
115 V / 230 V
6725 Semi-Micro Calorimeter
6759
NA
6759 Conversion Package 6725 to 6755
6725 Semi-Micro Calorimeter
P a r r I n s t r u m e n t C o m p a n y
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