Aqualog – Water Treatment Plant Analyzer

Automated Organic Analysis & Early Warning Sentinel

A better, faster and economical method for monitoring organics

Aqualog® is the only instrument to simultaneously measure both absorbance spectra and fluorescence Excitation-Emission Matrices. EEMs are acquired up to a 100 times faster than with other instruments. Dedicated software automates traceable Quinine Sulfate Unit calibration and correction of inner-filter effects and Rayleigh and Raman scattering lines, enabling rapid export to modeling algorithms like PARAFAC.

Aqualog now offers new deep UV absorbance and fluorescence excitation from 200 nm, in addition to a fully automated sample queue tool to facilitate continuous data acquisition, analysis and export for immediate multivariate analysis with the Solo™ package from our partner, Eigenvector Research, Inc.

ASTM D8431 Standard Test Method for Detection of Water-soluble Petroleum Oils (BTEX) by A-TEEM Optical Spectroscopy and Multivariate Analysis.

Segment: Scientific

Manufacturing Company: HORIBA Scientific
  • The only true simultaneous absorbance-fluorescence system available
  • TE-cooled CCD fluorescence emission detector for rapid data acquisition up to 100 times faster than any other benchtop fluorometer
  • Corrected UV-VIS absorbance detection path for stability and accuracy
  • Double grating excitation monochromator for superior stray light rejection
  • Matching bandpass for absorbance and fluorescence spectra
  • Automatic sample changer option (2 or 4 position)
  • Compatible with flow cells and titrator


  • Optimized experiment set-up menus minimize user configuration time
  • Complete NIST-traceable corrected fluorescence spectra automatically generated
  • Spectral and kinetic analysis tools for both absorbance and fluorescence data
  • Methods and batch protocols for automating multiple sample measurement

NEW A-TEEM™ technology

A-TEEM technology uses absorbance, transmittance and EEM data to fingerprint molecules with high specificity and ultrahigh-sensitivity at a 6 million nm/min emission scan rate!

All colored molecules exhibit unique molecular absorbance and transmittance spectra; many colored molecules also exhibit unique fluorescence excitation and emission spectra that can be measured as an excitation-emission matrix (EEM). Simultaneously combining Absorbance–Transmission and EEM is a new technique (A-TEEM) that provides a distinct molecular fingerprint with numerous potential applications.

Aqualog combines an ultrafast CCD that’s up to 4,000 times faster than traditional PMT-based fluorometers, with our new A-TEEM technology so you can easily and effectively identify, quantify and understand individual organic compounds in complex mixtures in minutes. A-TEEM has already proven in many cases to be more effective in protein, vaccine, wine and water research, quality and process applications than HPLC and vibrational spectroscopy.

NEW Aqualog® Datastream Dashboard


  • Seamless integration with Aqualog
  • Convenient HTML-based interface
  • Push-button method operation
  • Simple administrator level controls for calibration and method development


  • Easy access through internet or intranet
  • Dashboard shows the latest readings, time series and tables for trends and analysis
  • WTP can upload their own independent data


Aqualog Datastream Dashboard is powered by Solo_Predictor software from Eigenvector Research, Incorporated

NEW HORIBA Multi-Model Predictor Tool

HORIBA Instruments is pleased to introduce a new software tool designed to automate multivariate and machine learning analysis workflows for industrial QC/QA applications of HORIBA’s patented Aqualog Absorbance- Transmission fluorescence Excitation Emission Matrix (A-TEEM™) spectrometer.

Key Applications of HMMP Tool

  • Wine and Grape Quality Chemistry (phenolics, anthocyanins, tannins, sulfites etc..)
  • Water Contamination (oil, algae and other materials)
  • Grain mold and odor compounds
  • Cannabinoids
  • Pharmaceuticals (Drugs, Vaccines, Cell Media)
  • Olive Oil adulteration and spoilage
  • Dietary supplement adulteration


Key Features and Benefits

  • Easy, Rapid Operator Level Analysis
  • Facilitated Administration of Method Model Development and Editing
  • Complete Parameter Profile and Classification Reports
  • Compatible with Laboratory Information Management Systems
  • HMMP Add-In Fully Integrated into Eigenvector Inc. Solo/Solo+Mia and Exclusively Activated and Supported by HORIBA Instruments Inc.

NEW Automatic Sipper Accessory

New for our Aqualog®  A-TEEM™ spectrometer, the Aqualog automatic sipper accessory handles sampling from a single source, in addition to dispensing rinsing solutions, detergents and controlling reverse-flow drainage The 4-sample changer unitconnects to the main sipper unit to enable sampling of up to 4 sources.

The sipper offers convenient installation and operation, with built-in automatic cleaning, leak detection and protection.  It is fully integrated into the new Aqualog 4.0 software for batch analysis and has a variety of uses in water, pharmaceutical, beverage phenolics and many other applications.

When used at a water treatment plant, the sipper and four channel accessory enable the Aqualog to automatically extract and monitor raw, settled and finished water samples. Each sample changer unit is compatible with overflow and filtration devices, serving up to 4 independent water treatment plant sources.

Fluorescence Hardware
Light source Extended-UV: 150W vertically mounted xenon arc lamp
Excitation range 200 nm to upper limit of emission detector
Excitation bandpass 5 nm
Excitation monochromator Subtractive double monochromator
Excitation gratings 1200 gr/mm, 250 nm blaze
Excitation wavelength accuracy ±1 nm
Choice of Detector Red-extended
Emission range 250-800 nm
Emission grating 285 gr/mm; 350 nm blaze
Hardware pixel binning 0.58, 1.16, 2.32, 4.64 nm/pixel
Emission bandpass 5 nm
Emission spectrograph Fixed, aberration-corrected 140 mm focal length
Emission detector TE-cooled back-illuminated CCD
Emission integration time 5 ms minimum
CCD gain options 2.25 e-/cts in high gain, 4.5 e-/cts in medium gain, 9 e-/cts in low gain
Sensitivity Water-Raman SNR > 20,000:1 (RMS method) (350 nm excitation, 30s integration)
Weight 32.72 kg (72 lbs)
Dimensions LWH (618 x 435 x 336 mm); (24″ x 17″ x 13″)


Absorbance Hardware
Scanning range 200-800 nm (UV lamp)
Bandpass 5 nm
Slew speed Maximum 500 nm/s
Optical system Corrected single-beam
Detector Si photodiode
Wavelength accuracy +/- 1 nm
Wavelength repeatability +/- 0.5
Photometric accuracy +/- 0.01 AU from 0 to 2 AU
Photometric stability <0.002 AU per hour
Photometric repeatability +/- 0.002 AU (0 to 1 AU)
Stray light <1% measure with Kl standard

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