Permeation Tubes for Light
The Kin Tek (La Marque, TX) Trace
Source 57 Series refillable permeation
tubes extend the range of analyte
compounds to include light hydrocarbons and other gases with vapor
pressures too high for conventional
permeation tubes. The 57 Series tubes
are used in the Kin-Tek FlexStream
calibration gas generator to produce
ppm and ppb mixtures directly from
pure gases. 57 Series tubes use only
the gas phase of the compound.
Controlling the pressure in the tube
allows high vapor pressure compounds such as methane, ethane or ethylene to be dispensed by permeation.
Emission rate is proportional to the compound pressure
in the tube. For very low emission rates the compound
can be sealed in the tube. For higher emission rates tubes
should be used with the FlexStream GF Module to allow
for compound pressure control and periodic purge and
Morgan Advanced Materials (Windsor, UK) has added a
new type of insulating fire brick (IFB) — the JM-HD (
High-density) series — to its acclaimed range. The bricks are
made from Kaolin and high purity alumina which react
together to form Mullite during the firing process, where
temperatures can reach in excess of 1,400 degrees C. The
range has been tested and meets all of the ASTM quality
assurance standards. They are available in a wide range of
standard and special shapes in JM 25 HD, JM 26 HD, JM
28 HD and JM 30 HD grades.
1-800-333-1194 • www.fsip.biz
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