What was the primary reason for the station department to test the new detergent?

The primary reason for the station department to test the new detergent was to ensure it was superior to previously used products. This focus on superiority indicates that the goal was likely to improve cleaning effectiveness or efficiency, leading to better overall results in maintaining the cleanliness and appearance of the station. Testing for superiority involves assessing various performance metrics, such as how well the detergent removes stains, how quickly it works, and whether it meets specific safety and environmental standards.

In contrast, while reducing cleaning costs could be a consideration, it is not the primary reason for testing the new detergent. Evaluating employee satisfaction is important, but it is secondary to ensuring that the product performs better than existing options. Determining compatibility with different surfaces is also relevant, but it is a part of the broader goal of establishing the detergent's overall effectiveness and superiority in practical applications. Therefore, the emphasis on testing for superiority of the new product captures the core objective behind conducting the evaluation.