S P E C I F I C A T I O N S
Model Number:
6755
Precision Classification:
0.4% Class (1.5 – 5.0 °C rise at
or near room temperature)
Working Temperature Range:
10 – 50 °C
Temperature Sensitivity:
0.0001 °C
Energy Measurement Range:
2 – 1000 calories
Detection Limit:
0.1 Calorie
Energy Equivalent:
100 – 145 Calories/°C
Maximum Volume, Solute:
20 mL
Required Volume, Solvent:
90 – 120 mL
Balance Communication:
USB
Printer Communication:
USB
Network Connection:
TCP/IP via Ethernet
Dimensions (cm):
6755: 22w x 33d x 33h
6772: 56w x 36d x 31h
6755 Solution Calorimeter shown with 6772
Calorimetric Thermometer
T
he Parr 6755 Solution
Calorimeter,
utilizing a unique rotat-
ing sample cell and a precise micropro-
cessor-based thermometer, provides a
moderately priced and easily operated
instrument for measuring:
• Heats of Reactions
• Heats of Mixing
• Heats of Solution
• Heats of Dilution
• Heats of Wetting
Measurements are made at ambient
temperature and at atmospheric pressure
in either liquid-liquid or liquid-solid sys-
tems covering energy changes ranging
from 2 to 1000 calories.
Reaction Chamber
All reactions in the 6755 Calorimeter are
conducted in a fully silvered glass Dewar.
The Dewar is supported within a stain-
less steel air can from which it is easily
removed for filling or cleaning. A block of
plastic foam surrounds the air can, with
the entire assembly mounted in a rugged
aluminum case.
Rotating Sample Cell
A closed glass bell with a detachable bot-
tom holds a solid or liquid sample in the
Dewar and also serves as the stirrer for
the calorimeter system. The bottom of
the cell is closed with a PTFE dish which
fits snugly into the bell without requiring
a gasket or sealing ring. Solid samples
(up to 2 grams) can be weighed directly
into this dish before it is attached to the
bell. Liquid samples (up to 20 mL) can be
added to the closed cell from a pipette
inserted through the top stem.
Data Collection
With the 6755, the user is able to print to
an attached printer, obtain weights from
a balance, and transfer data to a com-
puter as the system incorporates the 6772
Calorimetric Thermometer.
Standardization
The 6755 Solution Calorimeter is general-
ly standardized using an exothermic reac-
tion with TRIS. The instrument may also
be standardized electrically with a heating
probe or through comparison with known
samples whose thermochemical behavior
is understood.
6765 Combined Solution and
Semi-micro Calorimeter
For laboratories that want to perform both
solution and semi-micro oxygen bomb
calorimetry tests, Parr offers the 6765
Combined Calorimeter. This includes the
6772 Calorimetric Thermometer plus a
calorimeter module and conversion parts
for both the 6755 Solution Calorimeter
and the 6725 Semi-micro Calorimeter.
6755 Ordering Guide
6755 Solution Calorimeter
Model No.
Voltage
Description
6755EA / EF
115 V / 230 V
6755 Solution Calorimeter
A274C
NA
Heating Probe (for electrical standardization, contact Parr technical support)
6765EA / EF
115 V / 230 V
Combined Solution and Semi-Micro Calorimeter
6729
NA
6729 Conversion Package 6755 to 6725
6755 Solution Calorimeter
O x y g e n C o m b u s t i o n C a l o r i m e t e r s
B u l l e t i n 6 0 0 0
17
1 - 8 0 0 - 8 7 2 - 7 7 2 0
