INFICON Explorer Portable Gas Chromatograph - Manual (Page 280)

Assay 1 User Notes
278
An Overview of Assay 1
Assay 1 consists of 40 compounds that belong to the TO-14 priority pollutant
list.
Explorer has been configured to separate and resolve as many of these target
compounds as possible. However, with the standard method there are some co-
elutions. As this method has been optimized to separate as many of these 40
compounds as possible, this method may be impractical if your compounds of
interest are a small subgroup of the Assay 1 compounds.
An electron capture detector (ECD) is available for Explorer. The ECD must be
installed in order to detect some of the compounds to which the PID is less
sensitive. Compounds identified as ECD compounds may not be detectable if your
instrument does not contain an ECD.
The information in these user’s notes will help you determine how to create your
own library of compounds using the information that has been stored in the Assay 1
reference library.
The Assay 1 Disk
Two types of files are included on the assay disks. Application (or method) files
have the extension .app. Method files are loaded through the Assay tab in the
SiteChart software and are used to program
Explorer.
Chromatograms from the photoionization detector are identified as .pid files.
Assay1A.pid, Assay1B.pid and Assay1C.pid are sample chromatograms from your
instrument. Chromatograms from the electron capture detector are identified as .ecd
files. Assay1A.ecd, Assay1B.ecd and Assay1C.ecd are also sample chromatograms
from your instrument. The .ecd files are only included if an ECD has been installed
in your instrument.
Assay1.app Assay1B.ecd Assay1A.pid
Assay1A.ecd Assay1C.ecd Assay1B.pid
Assay1C.pid
Make a copy of all the files on the assay disk and use this as your working disk.
Store the original disk in a safe location.