Plethysmometer
Test on Mice and Rats
The Plethysmometer (Paw Edema) test
serves to measure the effectiveness of anti-inflammatory
agents to reduce edemic conditions. In use, the paw is inserted
into water, contained in a special water cell of which the
resistance is changed due to the immersion of the animals
paw. This resistance change is calibrated in ml and shown
on the electronic monitor.
This form of detection eliminates
changes due to conductivity alterations at repeated insertions
(found on comparable Plethysmometer units.) The measurments
are shown on the units LCD readout in .1 ml for rats and
.01 ml for mice increments. T Safely operated either on
its own battery or on a line adapter at 9 or 12 V supplied.
The IITC paw volume meter is superb
when compared to other units on the market due to -
1. There is no meniscus problem,
which affects measurement
2. Measures resistance not displacement
3. Measures pressure to volume not
electrical resitance of wire to volume.
4. No wetting solutions
(special gels) required with the IITC system, gels are needed
with other systems to reduce the meniscus of the liquid
that naturally adheres to the wire. Amount must be exact
in order for other systems to function properly. The "gel"
changes the denisty of the water which creates an issue
with the measurements.


- No wetting solution needed
- One calibration/yr.
- Battery operated
- RS232 Standard
An angled acrylic stand
serves to keep the instrument in position for easy viewing.
The test cell is supplied on an acrylic stand of its own.
The fact that there is no “wetting solution”
required is a first for this type of unit. The unit also
allows for obstruction free viewing of the test subject
with free access to the cell.
Part #
520M Plethysmometer (Paw Edema) Meter for mice
520R Plethysmometer (Paw Edema)Meter for rats
520MR Plethysmometer Meter (Paw Edema) for mice and rats
One Year Warranty
and CE certified