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Journal of Automated Methods and Management in Chemistry
Volume 25, Issue 2, Pages 51-55
http://dx.doi.org/10.1155/S1463924603000087

Development of a photometric system for continuous flow analysis

Central Scientific Instruments Organisation, Chandigarh 160030, India

Copyright © 2003 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Most chemical analyses carried out in a clinical laboratory are colorimetric. An improved photometric system is described where a tungsten lamp is the light source, a photo-diode is the detector and a microcontroller 8051 is used for processing and displaying absorbances. The performance characteristics of the instrument are reported. The parameters investigated are photometric linearity, precision and instrumental drift.