What is the first step in checking the adequacy of the shaker?

Weighing an empty pan is a critical first step in checking the adequacy of the shaker because it establishes a baseline weight that is essential for any subsequent measurements. This initial measurement allows inspectors to accurately determine the weight of the material that will later be included in the pan. Without this step, it would be difficult to assess the effective performance of the shaker or to evaluate the results of the sieve analysis accurately.

By having this baseline, inspectors can identify any discrepancies in weight due to factors such as moisture content, material loss, or mechanical issues with the shaker itself during the sieving process. Once the empty pan is weighed, it can be used effectively in subsequent steps to evaluate the shaker's performance and ensure consistent and reliable results in the sieve analysis.