Diode array detector accuracy

The wavelength accuracy of the diode array detector is commonly determined by comparing a measured absorbance with the absorbance maxima of a reference... 

Spectroscopic detectors measure partial or complete energy absorption, energy emission, or mass spectra in real-time as analytes are separated on a chromatography column. Spectroscopic data provide the strongest evidence to support the identifications of analytes. However, depending on the spectroscopic technique, other method attributes such as sensitivity and peak area measurement accuracy may be reduced compared to some nonselective and selective detectors. The mass spectrometer and Fourier transform infrared spectrometer are examples of spectroscopic detectors used online with GC and HPLC. The diode array detector, which can measure the UV-VIS spectra of eluting analytes is a... 

The TIDAS 11 fibre optic spectrometer from J M uses external fibre optics to connect probes and/or flow cells while at the same time enabling calibration of the instrument through the use of the cuvette holder. The detector is a diode array for fast acquisition of data (12ms/spectrum). The spectral range is 190-1020nm with a wavelength accuracy of 0.3 nm. Probes can be transmission or ATR-based. The dimensions of the unit are 20X48X49 cm. 

---