According to FMC policy, when should the first and second hardness tests be completed?

The correct answer indicates that the first and second hardness tests should be completed before the first treatment and after the last patient's treatment. This timing is crucial because it ensures that the equipment is functioning properly and is within acceptable hardness parameters before any patient receives treatment, which is essential for safety and effectiveness. By conducting the first test before treatment begins, any issues with water hardness can be identified and addressed in advance, minimizing the risk of complications during dialysis. The second test after the last patient’s treatment helps verify that the hardness levels remained stable throughout the session, ensuring ongoing compliance with safety standards. This systematic approach is key to maintaining high-quality care and reflects best practices in patient safety and equipment monitoring.