Monitoring the Processing Chemical Costs and Effluents of a Motion-Picture Processing Laboratory

Abstract

A computerized system has been developed for determining the chemical cost and efficiency of operation of a motion-picture processing laboratory's chemical departments. A monthly cost analysis report is produced that shows also the BOD <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">5</inf> contribution of each solution, based on actual use, and compared to the laboratory's internal standards. The reports show the actual and aim use of each chemical. The actual cost of the chemical is compared to the so-called standard cost and the actual BOD <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">5</inf> is compared to the standard value. The BOD <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">5</inf> load of all chemicals is totaled and divided by the monthly water consumption thus giving a realistic value of the laboratory's BOD <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">5</inf> discharge. This technique has been in use for over two years, and the accuracy has been validated by independent laboratory analysis.