{"id":20244,"date":"2023-07-23T18:23:39","date_gmt":"2023-07-23T15:23:39","guid":{"rendered":"https:\/\/apellaser.ro\/product\/aqualog-environmental-water-research-analyzer-horiba\/"},"modified":"2023-11-21T14:41:36","modified_gmt":"2023-11-21T12:41:36","slug":"aqualog-environmental-water-research-analyzer-horiba","status":"publish","type":"product","link":"https:\/\/apellaser.ro\/en\/product\/aqualog-environmental-water-research-analyzer-horiba\/","title":{"rendered":"Aqualog – Environmental Water Research Analyzer | Horiba"},"content":{"rendered":"

Features & Benefits:<\/strong><\/p>\n

Up to 100 fold faster data acquisition rates than any other benchtop fluorometer.
\nTable-top instrument based on a CCD detector for fast simultaneous readout of the entire emission spectrum.
\nSoftware routines automatically correct data for inner filter effects, Rayleigh line scattering, water Raman scattering, normalize the intensity scale, and export data for analysis in industry standard 3rd party packages.
\nTable-top instrument based on a TE cooled CCD detector for fast simultaneous readout of the entire emission spectrum, means less analysis time or more samples.
\nAnalysis of samples with orders of magnitude variation in concentration without the need for tedious dilutions.
\nEliminating sample aging, bleaching and dilution issues as experimental variables. AqualogTM measures fully corrected EEMs in seconds. Rapid acquisition reduces bleaching compared to \u2018scanning\u2019 instruments that require up to 100 times longer data collection, exposing the sample to damaging UV wavelengths the whole time.
\nThe instrument is fully automated.
\nSoftware: The Aqualog software automatically:
\n– masks the Rayleigh scatter lines;
\n– normalizes to traceable intensity standards (Quinine Sulfate or Raman Scattering);
\n– offers 2-dimensional profiling of the \u2018integrated\u2019 excitation and emission spectra from EEMs;
\n– corrects and batch exports the data for multivariate analysis using the industry standard Parallel Factor Analysis (PARAFAC) method, reducing data analysis time by a factor of ten.
\nCorrected UV-VIS absorbance detection path for stability and accuracy.
\nDouble grating excitation monochromator for superior stray light rejection.
\nMatching bandpass for absorbance and fluorescence spectra.
\nThe optics: We only use aberration-corrected mirrors (no lenses) to increase the wavelength range, for you cannot get good anti-reflection coatings from 200 nm up through 850 nm or above. Lenses also suffer from chromatic aberrations, meaning different wavelengths focus at different depths in the samples, and consequently you lose sensitivity.
\nGratings: HORIBA, previously known as Jobin Yvon, has been designing and making ruled and holographic gratings for over 50 years. We use plane-ruled gratings in our instruments as opposed to cheaper holographic ones, because ruled gratings are much less dependent on polarization effects.
\nThe excitation source is a 150 W ozone-free xenon lamp. It is mounted vertically to prevent sagging and keep the illumination of the sample optimal.
\nA photodiode reference detector monitors the intensity as a function of time and wavelength to correct for any change in output due age or wavelength, and ensure more repetitive measurements. This reference detector enables to correct both absorbance and fluorescence detector signals.<\/p>\n

Technical Specifications:<\/strong>
\nFluorescence Hardware:
\nLight source : Extended-UV: 150W vertically mounted xenon arc lamp.
\nExcitation range: 200 nm to upper limit of emission detector.
\nExcitation bandpass: 5 nm.
\nExcitation monochromator: Subtractive double monochromator.
\nExcitation gratings: 1200 gr\/mm, 250 nm blaze.
\nExcitation wavelength accuracy: \u00b11 nm.
\nChoice of Detector: Red-extended.
\nEmission range: 250-800 nm.
\nSensitivity: Water-Raman SNR > 20,000:1 (RMS method) (350 nm excitation, 30s integration).
\nWeight: 32.72 kg (72 lbs).
\nDimensions: LWH (618 x 435 x 336 mm); (24″ x 17″ x 13″).<\/p>\n

Absorbance Hardware:
\nScanning range: 200-800 nm (UV lamp).
\nBandpass: 5 nm.
\nSlew speed: Maximum 500 nm\/s.
\nOptical system: Corrected single-beam.
\nDetector: Si photodiode.
\nWavelength accuracy: +\/- 1 nm.
\nWavelength repeatability: +\/- 0.5.
\nPhotometric accuracy: +\/- 0.01 AU from 0 to 2 AU.
\nPhotometric stability: <0.002 AU per hour.
\nPhotometric repeatability: +\/- 0.002 AU (0 to 1 AU).
\nStray light: <1% measure with Kl standard.<\/p>\n","protected":false},"excerpt":{"rendered":"

The HORIBA Aqualog is a unique optical spectrometer that is the gold standard in environmental water research around the world for the study of color dissolved organic matter (CDOM). The HORIBA Aqualog vastly improves the speed with which fluorescence EEMs are collected, dramatically increase the dynamic range across which EEM fingerprints are quantitative, and simultaneously acquires absorbance spectra for absorbance and color analysis of non-fluorescent molecules present in water. We call this technique that the Aqualog employs, an Absorbance-Transmission Excitation Emission Matrix, or A-TEEMTM.<\/p>\n

Resources:<\/strong><\/p>\n