Installation
Agilent Microwave Plasma Atomic Emission Spectrometers User’s Guide 31
External Gas Control Module (EGCM)
For safety information and to install the EGCM on the MP-AES
instrument, please see the instructions that came with the accessory.
The EGCM is an accessory with two specific functions:
Supply nitrogen gas to purge the optics system for analytical
measurements below 185 nm
Introduce a small amount of air into the plasma for the analysis
of organics. The air facilitates the analysis of organics by MP-AES
instrument techniques by reducing carbon buildup and
background signal resulting in lower detection limits when
analyzing organic solutions.
SPS 3 and SPS 4 Autosampler
For safety information and to prepare the SPS 3 or SPS 4 for
installation, please see the instructions that came with the accessory.
The SPS 3 and SPS 4 are compatible with a wide range of
commercially available low-cost autoclavable sample racks.
Sample contamination from airborne particles is eliminated and
corrosive or toxic fumes are removed during sampling with the
optional environmental enclosure.
Advanced Valve System (AVS) 4
For safety information and to prepare the accessory for installation,
please see the instructions supplied with the accessory.
The integrated AVS 4 (4 port switching valve) rinses the sample
introduction system while the next sample is being readied for
analysis prior to measurement. Excess sample is diverted away from
the spray chamber and rinse is introduced immediately after
measurement. This will increase productivity, reduce sample carry-
over and required cleaning frequency of sample introduction
components.
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