One of the most common and cost effective methods of identifying liquid maldistribution and other problems affecting packed column performance is by performing a Tracerco Tru-Grid™ Scan. A Tru-Grid™ Scan is a series of four conventional column scans performed using a grid consisting of pairs of parallel scanlines ninety degrees to each other. With regard to liquid distribution through packed beds, the objective of a Tru-Grid™ Scan is to measur

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