Used GL SCIENCES GL-7439 #9388305 for sale

GL SCIENCES GL-7439 spectrophotometer is an instrument designed to measure the intensity of light transmittance or absorbance over a given wavelength. This is achieved through the use of a light source and two monochromators. This instrument features a dual beam optics set-up which provides scan speed and accuracy with a wavelength range of 170 - 1100 nm. GL-7439 is incredibly user-friendly and features PC and external control. The instrument features a computer-controlled, filter-based system which sets the wavelength in both the excitation and emission ranges, with no manual adjustment of monochromator grating angle required. GL SCIENCES GL-7439 also features a 16-bit detector, giving it extremely high dynamic range and accuracy. The unit's scan speed is adjustable via the software, ranging from 2.5 to 30 nm/sec. GL-7439 also features motorized attenuators, providing continuous transmittance or absorbance wavelength scans with no manual adjustment required. This unit has an excellent signal-to-noise ratio and low stray light, enabling the user to achieve accurate and consistent measurements in a variety of settings. GL SCIENCES GL-7439 is suitable for transmittance and absorbance measurements in many applications such as absorption spectroscopy, fluorescence spectroscopy, protein and DNA quantification, and tracking of reacting components. Due to its motorized components, GL-7439 can be operated with the included Windows XP/7/8/10 software, or via an RS232/RS232C serial connection. This unit also can be used stand-alone, using the included control panel keys. GL SCIENCES GL-7439 also has a vacuum-sealed design to minimize ambient light interference and has a passive cooling system to maintain temperature stability. GL-7439 spectrophotometer is an excellent choice for those looking for accurate, reproducible results in a range of applications. With its high dynamic range, low stray light, motorized components, and excellent signal-to-noise ratio, this unit is a great addition to any laboratory's equipment.