The UV region of the spectrum is useful for the measurement of everything from small organic molecules to proteins and nucleic acids. All biological samples and many industrial and consumer products are active in the UV. Whether you are measuring absorption, fluorescence or reflectance, the UV region of the spectrum can be vital for obtaining a proper understanding of your sample. Almost all UV sources also have some light emission into the visible region of the spectrum as well, making them ideal for measuring samples in both regions of the spectrum.
Xenon sources (PX-2 and HPX-2000 models) offer very high intensity in the UV and are useful for absorbance, fluorescence or reflectance measurements. Pulsed Xenon sources, like the PX-2, are high intensity with a lower duty cycle, making them ideal for measurements where too much UV light can damage the sample.
Deuterium sources (DH-2000-S-DUV-TTL model) are weaker but much more stable than xenon. They are ideal for kinetics or process measurements where stability over a long period of time is important.
Fiber-coupled LED light sources are ideal for fluorescence spectroscopy and general fiber illumination applications. LLS LEDs are available in nearly 50 different wavelength options from 240-630 nm.