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Format

ChemStation Gas Chromatography/Mass Spectrum (GC/MS) Data File

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Summary

Name
ChemStation Gas Chromatography/Mass Spectrum (GC/MS) Data File
Version
2
Identifiers
PUID: fmt/2101
Format type
Dataset
Description
ChemStation Gas Chromatography/Mass Spectrum (GC/MS) Version 2 Data File stores raw GC/MS data collected from Agilent ChemStation instruments. The format stores the data in a proprietary, binary format developed by Agilent Technologies. The files are organized in a folder structure with the suffix “.D” and often paired with .sav files to store the instrument tuning information and .res to store analysis results. The first few lines of the file may be in plain text and contain information about the analysis including the timestamp.
File extensions
ms
Submitted by
The National Archives and Records Administration / The National Archives and Records Administration

Internal signatures

GC/MS Data File 2

Description
BOF; Offset: 0; Magic Bytes: version number indicator 0x01320000 followed by Magic Bytes 'GC / MS D(ata File|ATA FILE)'

Byte sequences

Min Frag Length
Absolute from BOF
Offset
0
Max offset
0
Byte Sequence
01320000114743202F204D532044(4154412046494C|6174612046696C65)
Endianness
None

Changelog

  • V123

    Release date
    9 June 2026

    • Added format

      ChemStation Gas Chromatography/ Mass Spectrum Data File: Full entry added. Submitted by National Archives and Records Administration.

    • Added signature

      ChemStation Gas Chromatography/ Mass Spectrum Data File: Signature researched and samples provided by National Archives and Records Administration.