Replacement Chemical Trap for HP 5890 GCs
GC carrier gas line contamination is a difficult problem to
remove trapped contaminants and restored to its original
diagnose and correct. Carrier gas line contamination can
occur from carrier gas impurities or by sample backflash.
Contamination can appear as ghost peaks or a rising baseline
not attributed to the inlet, column, or detector.
HP 5890 GCs
incorporate a small chemical filter in the carrier gas line to
reduce the possibility of contamination. However, the trap
capacity is low and must be periodically changed or contami-
nation will occur. It is recommended the traps be replaced
annually under normal operating conditions or more fre-
quently under heavy usage.
performance.
Restek’s chemical trap is easy to install and attaches to the
same fittings as the original equipment. It incorporates built-
in frits and adsorbents to remove bothmoisture and hydrocar-
bons. Additionally, Restek’s trap can be regenerated to
Replacement Chemical Trap for
HP 5890 GCs:
cat.# 21610
Leak Detectors
Restek’s Leak Detective
l
Detects minute leaks not possible with liquid leak detectors*.
l
Compact, lightweight, hand-held design.
l
Lowest cost thermal conductivity leak detector available.
l
Contamination-free leak detection.
l
Battery or line operated.
l
Detects helium or hydrogen leaks at >20ul/min. or >200ppm.
well as an LED readout. Two 9-volt batteries (included)
provide 10-12 hours of continuous operation, or the unit can
be used with an AC adaptor (included).
Restek’s new Leak Detective is the affordable solution for
GC leak detection. Leaks can increase detector noise, cause
baseline instability, waste carrier gas, and shorten column
lifetimes. The LeakDetective detectsminute gas leaks
which may go undetected by liquid leak detectors.
The compact design of the Leak Detective ensures comfort-
able hand-held operation. Trace leaks of both helium and
hydrogen**can be detected. Sensitivity is similar to other
models on the market with detectability of helium or hydro-
gen and leak rates of 20ul/min. or an absolute concentration
less than 200ppm. Leaks are indicated by an audible alarm, as
Restek’sLeakDetective (110 volts):
cat.# 21607
(220
volts):
cat.#21609
**
Not designed for use in explosive atmospheres.
Gow-Mac Leak Detector
l
Identifies minute leaks that are undetectable by liquid leak
detectors*.
l
Contamination and residue-free leak detection.
l
Prolongs column life.
TheGow-Mac leak detector is a must
for all capillary
chromatographers. It is a portable unit that operates on line
voltage or on an internal, rechargeable lead/acid gel battery.
Gow-Mac LeakDetector:
cat.# 20130
*
Never use liquid leak detectors on a capillary system because liquids are
actually drawn into the column.
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1998
