What is the difference between a batch and a lot?
A batch is the amount of material run through a mixer at one time. At Parco, a batch of compound weighs between 50 and 240 pounds, depending on the size of the mixer and the specific gravity of the compound. The mixing department assigns each batch a sequential five-digit batch number. We put the batch number on packages, packing lists, and certifications as evidence of traceability of the material to acceptance test results. After the laboratory approves a batch, the mixing department distributes the batch to work orders. If a work order is for a large quantity of seals, it may take an entire batch to mold the parts. Usually, the batch will be distributed to several work orders. Work orders are uniquely numbered and bear the number of the batch. A lot is all the same size parts made from the same batch of rubber that are run through the plant together. At Parco, the term lot is used to describe all the parts associated with a particular work order.
