DB620小型双光∑　束紫外-可见（近红外）分光光度计

微秒量级的动力学研究的首选
因其超强的稳定性及及其微小的噪声，DB620也被广泛用于长时热融化平衡的研究
This modern digital optical bench provides high accuracy, high performance true dual beam data at rates to 500 ns with and without associated scanning. With one millisecond of collection time, 1000 data points are fitted to a straight line to return RMS noise at 250 nm of 0.0014 AU; with 1 second collection time, RMS noise lowers to 0.00016 AU. Scanning between these high speed fixed wavelength readings results in extremely low noise spectra.
Hardware includes the Instruments, SA DH-10 double grating monochromator for selecting and scanning the wavelengths. This tiny monochromator (245 x 150 x 84 mm) has outstanding light throughput, even down to the lowest wavelengths, as it has fewer reflective surfaces than most double grating monochromators (it includes two aberration-corrected concave holographic gratings which are mechanically coupled; this type of grating does not require collimated light). Olis clients will specify the required spectral range of 200-750 nm, 350-800 nm, or (at slightly higher cost) 400-1600 nm, and all associated light sources and detectors will be selected by Olis to be compatible with this blazed grating range. The spectral resolution is 0.5-5 nm, based on the slit width used; slits are interchangeable fixed slits of 0.5, 1, and 2 mm wide.