6.1 Size Comparison of Single Reactors ·Batch reactor Batch reactor has the advantage of small instrumentation cost and flexibility of operation.It has the disadvantage of high labor and handling cost,often considerable shutdown time to empty,clean out,and refill,and poorer quality control of the product. 2 2 6.1 Size Comparison of Single Reactors • Batch reactor • Batch reactor has the advantage of small instrumentation cost and flexibility of operation. It has the disadvantage of high labor and handling cost, often considerable shutdown time to empty, clean out, and refill, and poorer quality control of the product