•
•
●
Ideal for lab environments
●
Smaller than G-Cal devices
●
More accurate than G-Cal devices
●
Require a temperature-controlled environment
●
Inexpensive calibration solution
Dynacal permeation devices are small, inert capsules
containing a pure chemical compound in a two phase
equilibrium between its gas phase and its liquid or solid
phase. At a constant temperature, the device emits the
compound through its permeable portion at a constant
rate.
Devices are typically inserted into a carrier flow to generate
test atmospheres for calibrating gas analyzer systems,
testing hazardous gas alarms, or conducting long-term
studies of effects on materials or biological systems in
short, any situation requiring a stable concentration of a specific trace chemical.
Tubular device
The tubular device, a
sealed permeable cylinder
containing the desired
permeant reference
material, is the most
widely used of the various
permeation devices.
Release of the chemical occurs by
permeation through the walls of the
Teflon® tube for the entire length between
the impermeable plugs. A wide range of
rates can be achieved by varying the
length and thickness of the tube, with
typical rates ranging from 5 ng/min to
50,000 ng/min.
Extended life tubular device
Our unique extended life
tubular (XLT) device is
essentially a standard
tubular device coupled to
an impermeable stainless
steel reservoir. This
design offers a range of
permeation rates corresponding to a
tubular device but has a significantly
enhanced lifetime by a factor of 3 for a 5
cm (active length) device or a factor of 12
for a 1 cm device.
Wafer device
Dynacal® Permeation Tubes and Devices
from VICI Metronics
Website : www.chromtech.net.au E-mail : info@chromtech.net.au TelNo : 03 9762 2034 . . . in AUSTRALIA