1758 Printer
Ordering Guide
Model No.
Description
(Select part no. for voltage required)
6755EA
Solution Calorimeter, 115V
6755EF
Solution Calorimeter, 230V
Spare parts are available, including:
A130C
Sample Cell with Coupling, less 126C Bottom Dish.
126C
Bottom Dish, Teflon
A129C
Glass Push Rod
123C
Dewar Flask without Spacer Ring or Cover
3421
TRIS, Parr Standard, 100 g Bottle
1758EA
Printer with Power Supply, 115V
1758EF
Printer with Power Supply, 230V
Ordering Guide
Model No.
Description
(Select part no. for voltage required)
1758EA
Printer and Cable, 115V
1758EF
Printer and Cable, 230V
334C
Printer Paper
335C
Printer Ribbon
A2170E
Printer Cable, USB
The 1758 Printer
For users who prefer to have
a dedicated printer at the calori
meter, Parr offers the Model 1758
Printer. The 1758 is a compact, dot
matrix printer set up for 40-column
reports. It is housed in a separate
case 5.5 inches wide, 9 inches
deep and 7 inches high and oper-
ates from its own power supply.
The 1758 is furnished with all the
standard parts and accessories
listed in the ordering guide which
are also available for purchase
separately.
significant heat leak, the relative standard deviation
may increase to 1.0% of the determined value.
Standardization
Three different procedures are available for
standardizing the calorimeter:
Chemical Standardization
is readily accom-
plished using a precise, repro-
ducible exothermic reaction of
TRIS—tris(hydroxymethyl)amino
methane—with 0.1 N HCI in a NIST
procedure which is described in
the instructions furnished with the
instrument. A 100-gram bottle of
TRIS is furnished with the calorim-
eter for this purpose. Additional
supplies can be obtained from
Parr, or the basic reference mate-
rial may be purchased from the
National Institute of Standards and
Technology.
Comparison Standardization
involves the use of known samples
supplied by the user. By selecting
samples whose enthalpy changes
are known and whose thermo-
chemical behavior is similar to the
unknown material, the calorimeter
can be standardized by simply run-
ning duplicate tests with known and
unknown materials.
Electrical Standardization
requires an electric heating probe,
a uniform power supply, a high
precision voltmeter and a precise
interval timer. With the excep-
tion of the heating probe (Part
No. A274C), this equipment is not
sold by Parr, but most of the items
can be obtained from commercial
sources.
Standard Parts
Each 6755 Solution Calorimeter
consists of a Dewar reaction vessel
in an insulated housing with a glass
sample cell and sample dish, push
rod, thermistor probe, stirrer drive
motor and a calorimetric thermome-
ter. One extra sample cell with a dish and one 100 g bottle
of Parr Standard TRIS are furnished with the calorimeter.
Conversion Parts
A conversion set consisting of all parts needed to
convert a 6755 Solution Calorimeter to a 6725 Semimicro
Bomb Calorimeter is available as described on page 11.
S o l u t i o n a n d S e m i m i c r o C a l o r i m e t e r s
B u l l e t i n 6 7 0 0
7
1 - 8 0 0 - 8 7 2 - 7 7 2 0
