A low cost absorption spectrophotometer for the short wave near infrared spectral region (850-1050 nm) is described. The spectrophotometer is basically composed of a conventional dichroic lamp, a long-pass filter, a sample cell and a Czerny-Turner type polychromator coupled to a 1024 pixel non-cooled photodiode array. A preliminary evaluation of the spectrophotometer showed good repeatability o...

SEPARATIONS W. De Malsche*, J. Op De Beeck, Selm De Bruyne, H. Gardeniers and Gert Desmet Vrije Universiteit Brussel, BELGIUM and Mesa+ Institute for Nanotechnology, THE NETHERLANDS ABSTRACT A non-porous C8 coated silicon pillar channel design is presented that allows the achievement of a high pressure and high efficiency operation for HPLC separations. Performing on-chip injection and detectio...

This paper describes the properties and use of a fiber optic probe as an attachment to a spectrophotometer and its use for measurements in solutions and turbid suspensions. Measurements of a standard were identical when a spectrophotometer equipped with the probe was used or when a spectrophotometer was used in a conventional manner. The probe was calibrated for turbidimetric measurements with ...