The latest spectrometer from Ocean Optics uses a novel optical bench design and high-performance components to provide high throughput, low stray light and excellent thermal stability. The Ocean HDX has a back-thinned CCD array and new “High Definition Optics” design. Low stray light performance contributes to high dynamic range and high absorbance linearity (nearly 3 AU). These features also make it possible to measure optically dense samples quickly and accurately. High throughput and the use of a back-thinned CCD detector deliver higher sensitivity performance for low light applications including fluorescence. Optical resolution is <1.0 nm (FWHM) and the wavelength range 200–1100 nm, with thermal stability of ±0.5 pixels from 0 °C to 45 °C. Users can store up to 50,000 spectra and take advantage of onboard averaging of spectra. Communications options include USB, Gigabit Ethernet, SPI, Wi-Fi, API Wi-Fi and RS-232.