calibration gas standards/generators
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vici metronics
232
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G-Cal Permeation Devices
Excellent for use in the field
Can be operated at room temperature
Can handle Arsine and Phosphine
Longer lifetime than Dynacal devices
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Comparison of G-Cal permeation devices
and Dynacal PTFE
permeation devices
Patented* G-Cal permeation tubes
offer a proven and repeatable means
of generating desired gas or vapor
concentrations. The permeant gas
escapes through the proprietary
membrane system and mixes with
a carrier gas (nitrogen is the most
common) at a controlled flow rate to
obtain a known mixture in ppm or
ppb. Applications include calibration
of gas monitoring systems and
chromatographs, accuracy check
of gas detectors, and generation of
known test atmospheres for a specific
application.
G-Cal devices exhibit the lowest tem-
perature sensitivity among available
similar products. The permeation rate
through the polymeric membrane
used in G-Cal devices changes only 1-3%
per degree C, eliminating the need for
a temperature-controlled chamber.
Most G-Cal devices are guaranteed for
12 months operating life.
Over 100 different substances are
available, including Arsine, Phosphine,
and gas phase devices such as CO, NO,
and Methane. Available permeation
rates range from less than 100 ng/min
to 50,000 ng/min. Each G-Cal device
is individually calibrated and verified
to generate a given mass output
per unit time (ng/min) at a set point
temperature. A graph which shows
an estimated permeation rate vs.
temperature from 0 to 50°C is included
with each device.
* US Patent No. 4,399,942
Compounds
available in
G-Cal permtubes
Literally hundreds
of compounds are
available in our
permeation devices.
This list is merely
representative of the
range we offer. Contact
us if you don't see what
you're looking for.
Ammonia
Arsine *
Benzene
Carbon Dioxide *
Carbon Monoxide *
Carbonyl Sulfide
Chloroform
DMMP
Dichloromethane
Dimethyl Sulfide
Dimethyl Formamide
Ethyl Chloride
Ethyl Mercaptan
Ethylene Oxide
Formaldehyde
Freons
Hydrogen Fluoride
Hydrogen Sulfide
Methane *
Methanol
Methyl Mercaptan
Nitric Oxide *
Nitrogen *
Nitrogen Dioxide
Nitrous Oxide *
Oxygen *
Phosphine *
Propylene Oxide
Sulfur Dioxide
Sulfur Hexafluoride
Thiophene
oluen
Vinyl Chloride
Water
Xylenes
* Available only in G-Cal
permeation devices.
more information
Dynacal perm tubesp. 229
CHROMalytic TECHnology Pty Ltd AUSTRALIAN Distributors e-mail:
Tel: 03 9762 2034
