SRI RGD
DETECTOR
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Detects Reducing Gases like Hydrogen and
CO down
to the ppb levels |
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Heated UV detection cell with Absorbance
Output |
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User replaceable Reaction Tubes |
The SRI
Reduction Gas Detector is sensitive to volatile
reducing compounds down to the ppb level, and is
often used to detect atmospheric carbon monoxide
and hydrogen. When compared to the FID
detector, the RGD is ten times more sensitive to
unsaturated hydrocarbons, and virtually
unresponsive to saturated hydrocarbons. This
combination of sensitivity and selectivity
allows the analysis of atmospheric pollutants
such as ethylene, benzene, carbonyl sulfide,
phosphine, and methanol. |
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The SRI RGD uses a
mercuric oxide reaction tube and a mercury lamp
in a heated UV detector cell. When a reducing
gas elutes from the column into the hot reaction
tube, it reacts with the mercuric oxide to form
mercury vapor. As it flows through the detector
cell, the gaseous mercury absorbs the UV light
from the mercury lamp inside the cell. The
change in transmittance is converted by the data
system into an absorbance output, which is
proportional to the amount of reducing gas. A
carbon filter at the UV detector cell outlet
traps the condensed mercury vapor for safe
disposal.
High
concentrations of chlorinated and aromatic
compounds can easily contaminate the mercuric
oxide bed, resulting in the need for
replacement. Reaction tubes are easily
replaceable, and blank reaction tubes can be
economically packed by the user. |
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#SRI-8690-0009,
RGD DETECTOR |
$6,179.00 |
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#SRI-8670-0010,
BLANK REACTION TUBE & SEALING FRITS |
$100.00 |
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