Used WATERS M 2487 #9108919 for sale

WATERS M 2487 was a precursor to modern spectrometers used in measuring absorption spectra. It was a classical double-beam spectrophotometer that operated based on the principles of monochromatic light. The device was comprised of two arms, each containing a separate monochromator. One arm, the sample or reference arm, housed the sample to be measured. The other arm, the reference arm, contained a reference material with an emission spectrum that was known and stable. Light from the reference arm was compared to the light from the sample arm. Comparisons between the two arms were made by a device called a photomultiplier tube at the base of the instrument which generated an electrical signal proportional to the difference in light intensity between the two arms. The magnitude of the electrical signal was then registered by a recorder and is the spectral information typically presented in the form of an absorbance spectrum. M 2487 was highly useful for a number of spectroscopy applications due its linearity and accuracy. It could measure the optical densities of substances in the order of 0.0001 and enabled the acquisition of near-infrared information in addition to visible information which was a unique feature of the instrument. The device also offered exceptional stability, precise wavelength control, and transient response. These features made it an invaluable tool to spectroscopists in the analysis of complex samples. In particular, it was used for fluorescence spectroscopy and solvent analysis applications. WATERS M 2487 had a wide variety of features and options that gave users greater control over the type of measurements they could take. These included slit diaphragms, neutral density filters, scan wheels and slit wheels, a pinhole assembly, a cross beam polarizer, and a range of auxiliary light sources. As the device was air-cooled, it had several ports that enabled the addition of components and accessories. Additionally, the device featured a detachable sample compartment that allowed samples to be quickly and easily loaded and unloaded. Overall, M 2487 was a powerful and versatile tool for measuring light absorption spectra of a wide variety of samples. It was renowned for its accuracy, reliability, and responses to transient process. Such features made it an ideal instrument for scientific and laboratory use.