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Jar testing is a method of simulating a full-scale water treatment process, providing sys-tem operators a reasonable idea of the way atreatment chemical will behave and operatewith a particular type of raw water.
10 minutes to do a lab type jar test is far too long when the wastestream is 200 gpm and needs a correction. While there are occasional opportunities for batch processing, continuous operation is the normal routine and that requires rapid response to stay within the ballpark of desired goal.