Electronic Noses
Instrument for sensory analysis of odor

HERACLES Flash Gas Chromatography Electronic Nose

This all-in-one instrument, both electronic nose and ultra fast gas chromatograph, performs overall odor profiling and chemical composition analysis in one run.

Advantages of HERACLES Electronic nose

  • Chemical and sensory analysis in one run
    GC and e-nose functionalities
  • Ultra fast analysis
    without any loss of resolution
  • High sample throughput
    3 to 8 minutes
  • High sensitivity
    (down to low ppb), even on highly volatile compounds
  • Reliable identification of compounds
    thanks to the 2 columns and Arochembase package
  • Compact,
    small footprint

Technical features of HERACLES electronic nose

The HERACLES electronic nose features a unique combination of technical characteristics that make it the most powerful and flexible electronic nose in sampling, detection, and data processing:

Electronic Nose sampling devices

Electronic Nose autosamplers

Heracles electronic nose

To automate sample incubation, headspace generation, collection and injection, Electronic Nose analyzers can be coupled to autosamplers instead of using manual injection. Additionnally, these autosamplers can be further equipped with a variety of devices for extracting or concentrating volatile organic compounds before analysis.

  • • Storage of up to 96 vials 10 or 20mL, agitated incubation oven for up to 6 vials
  • • Possible use of large vials (50-100-250 mL or 1L) or Petri dish with suitable incubation system for generating headspace
  • • Headspace or/and liquid injection modes
  • • Compatible with numerous optional devices for compounds extraction & concentration


  • • High throughput of analysis
  • • Automated operations
  • • Reproducible operating and analytical conditions
  • • Flexibility of devices and options

Headspace Sampling Devices


In order to optimize headspace sampling or pre-concentrate volatile organic compounds, various sampling options can be mounted on autosampler or directly on the electronic nose prior to odor measurement and VOC analysis:

  • • Solid Phase Micro Extraction (SPME)
  • • Solid Phase Dynamic Extraction (SPDE)
  • • In Tube Extraction (ITEX)
  • • Thermal Desorption AutoSampler (TDAS)
  • • Measurement bell to assess the diffusion and longevity of a fragrance
  • • Flow cell for dynamic on-line analysis


  • • Optimized sampling
  • • High sensitivity
  • • Increased selectivity
  • • Reproducible operating conditions

Gas Chromatography Electronic Nose detection technology

Electronic Noses detect and measure organic compounds, whether or not they are an odorant. The Electronic Noses from Alpha MOS use various technologies, among whichGas Chromatography or Fast Gas Chromatography.

Solid, liquid or gas samples can be analyzed by liquid or headspace injection. With Fast gas chromatography, C20 are analyzed in less than 60 seconds. After a simultaneous injection on 2 columns of different polarities coupled to 2 Flame Ionization Detectors (FID), the 2 chromatograms are treated as a global fingerprint.
For data processing, retention times and peaks areas constitute the raw data. Detection Heracles electronic nose

Gas Chromatography Electronic Nose data processing software

A common and unique platform of the AlphaSoft software monitors all electronic noses, electronic tongue and electronic eye from Alpha MOS range.
Compatible with Windows XP/Vista/7, AlphaSoft is available in 7 languages: English, French, Spanish, German, Japanese, Chinese, Korean.

AlphaSoft offers numerous advanced functionalities in gas chromatography to optimize GC based Electronic Noses performance:

  • • Ability to visualize the chromatogram during acquisition for immediate integration
  • • Method and sequence set-up for automated acquisition and processing of series of samples, method development
  • • Large choice of calibration modes
  • • Baseline subtraction
  • • Batch reprocessing
  • • Customizable display and reports

AlphaSoft uses multivariate statistical analysis and chemometrics to acquire, compute and interpret electronic nose measurements.
AlphaSoft offers various data processing models and different decision tools for qualitative or quantitative analysis in odor evaluation:

Data processing Heracles electronic nose

Principal Components Analysis (PCA)
Discrimination Factorial Analysis (DFA)
Statistical Quality Control Shelf life over time Partial Least Square (PLS)
Comparative mode
Comparison of numerous samples
Odor / VOC map
Pass/fail or sample qualification
Prediction for new samples
Odor / chemical change over time
Best-before date
Prediction of quantitative parameters: concentration, sensory attribute intensity
  • • Embedded and thermo-regulated pre-concentration trap increasing sensitivity
  • • Liquid or headspace injection modes
  • • Numerous sampling options: manual syringe injection, gas bag sampling accessory, large volume capability, autosampler with different vial sizes (from 10mL to 1L)
  • • Sample extraction and enrichment options adaptable on the autosampler: Petri dish sampling, Thermal Desorption AutoSampler (TDAS), Flow Cell for dynamic measurement
  • • Fast heating rate: up to 10°C/s
  • • 2 columns of different polarities in parallel, coupled to 2 ultra sensitive Flame Ionization Detectors (FID)
  • • Lab & on-field configurations
  • • Powerful AlphaSoft software: instrument monitoring, chromatograms acquisition and integration, qualitative and quantitative analysis using statistical data processing and chemometrics
  • Optional Odor Analysis Module (AroChemBase) for chemical and sensory characterization of the products composition based on the Kovats Index of chemical compounds

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