What corrective actions can be taken based on batch test results?

Adjusting the manufacturing process is the most relevant and effective corrective action based on batch test results. When test results reveal defects or quality issues, making modifications to the manufacturing process can address the root causes of these problems. This might involve altering machine settings, changing the order of operations, or using different materials or techniques. The goal is to enhance product quality and ensure that future batches meet the required standards without compromising efficiency or increasing costs unnecessarily.

While hiring new manufacturing staff may be a consideration in some contexts, it doesn't directly address the immediate issues revealed by batch testing. Similarly, increasing production costs does not directly rectify any problems identified in the test results and could hinder the overall efficiency of production. Changing suppliers might be another action considered if raw materials are deemed subpar, but it also does not directly respond to the immediate process-related issues indicated by the test results.