Filters And Traps - Agilent Technologies ALS Handbuch

have been removed, is recommended for all fittings. Do not use pipe dope to
seal the threads; it contains volatile materials that will contaminate the
tubing.
Pressure regulators typically end in fittings that must be adapted to the
correct style or size.
male NPT fitting to a 1/8-inch or 1/4-inch Swagelok fitting.
Table 24
Description
Swagelok 1/8-inch to female 1/4-inch NPT, brass
Swagelok 1/4-inch to female 1/4-inch NPT, brass
Reducing union, 1/4-in. to 1/8-in., brass, 2/pk

Filters and traps

Using chromatographic-grade gases ensures that the gas in your system is
pure. However, for optimum sensitivity, install high-quality filters or traps to
remove traces of water or other contaminants. After installing a filter, check
the gas supply lines for leaks.
Agilent recommends the Gas Clean Filter system. The Gas Clean Filter system
delivers high purity gases to your analytical instruments, reducing the risk of
column damage, sensitivity loss, and instrument downtime. The filters are
designed for use with the GC, GC/MS, ICP-OES, ICP-MS, LC/MS, and any other
analysis instrument using carrier gas. Six filters are available, including CO2,
oxygen, moisture, and organics trap (charcoal).
Filter types
Each Gas Clean Filter type is designed to filter out a specific impurity that
may exist in the gas supply. The following filter types are available:
• Oxygen - Prevents oxidation of the GC column, septum, liner, and glass
• Moisture - Delivers fast stabilization times for increased GC productivity,
GC, GC/MS, and ALS Site Preparation Guide
Table 24
Parts for adapting NPT fittings
wool.
and prevents hydrolization damage to the stationary phase, column, liner,
glass wool, or septum in the GC.
lists parts needed to adapt a standard 1/4-inch
Part number
0100-0118
0100-0119
5180-4131
7890 Series GC Site Preparation
47