The SFS-Cube is designed as a compact, fast scanning spectrometer to operate in laboratory and in industrial environment based on the measurement of the Spectral Fluorescence Signature (SFS) of liquid, powder or solid samples. The measured SFS is an excitation/emission matrix of fluorescence with automatically filtered out elastic (Rayleigh) scattering of sample. The SFS-Cube is optically designed as an all-reflection spectrometer to operate in a wide UV/VIS spectral range with no chromatic aberrations.
- with optical fibers to conduct induced light to and collect fluorescence from the opaque or solid samples including different surfaces
- or 90-degree optical setup for fluorescence measurements of liquid samples using quartz cell.
The analyzer can be used in a large variety of spectrofluorometry applications, including the qualitative and quantitative analysis of the organic constituents in liquid, powder and solid samples, including PAH, oils, lubricants, phenol, organic chemicals, etc., as well as living materials (plants, bacteria, viruses, spores, etc.).
The principal optical layout of SFS-Cube is a front-face scheme (when using the fiber option) or 90-degree scheme (when using cuvette) for sample excitation and fluorescence measurements. Typically the detection of the substances of interest occurs in the presence of matrix effects by background surfaces or other chemicals in the measured sample. SFS technique uses several wavelengths of excitation to allow one to separate the fluorescence spectra of substances of interest from the background.
The SFS analysis is done using pattern recognition algorithms by decomposing the measured SFS and comparing the patterns with corresponding spectral data in the SFS library. Different compounds in a mixture can be recognized and quantified without separation of individual substances.
Technical Specification
| Sample pre-treatment | Not required |
| Response time, full SFS scan | 30 sec |
| Light source | Pulsed Xenon lamp, 20 Wt |
| Spectral unit | Scanning excitation / emission monochromators |
| Spectral range | 220-650 nm excitation 220-730 nm emission |
| Detector type | Photo-Multiplier Tube |
| Sample cell | Standard 4 ml quartz optical cell |
| Fiber-Optic probe | Front-face, 1.5 m length |
| Remote control | WiFi |
| Device calibration | Automatic, with reference-channel |
| Power consumption | 45 VA |
| Voltage | 100-240V / 50-60 Hz |
| Dimensions (L × W × H) | 23 × 30 × 19 cm |
| Weight | 7.7 kg |