What is the GAC iodine rating requirement for effective use?

The GAC iodine rating requirement is an important consideration in hemodialysis, specifically regarding the effectiveness of granular activated carbon (GAC) filters in removing chlorine and other harmful substances from the water used in dialysis. The correct response indicates that a GAC iodine rating greater than 900 is necessary to ensure that the activated carbon has a sufficient capacity to adsorb chlorine and other organic compounds effectively.

This high iodine number signifies that the carbon has a large internal surface area and a high degree of porosity, which are crucial properties for effective filtration. A lower iodine number could indicate that the GAC is not as effective in its adsorption capacity, potentially allowing harmful substances to persist in the water supply, thereby compromising patient safety.

In contrast, options suggesting lower iodine ratings do not meet the necessary threshold for effective filtration, pointing to inadequate performance of the GAC material. Thus, the requirement of an iodine rating greater than 900 is vital for ensuring high-quality water used in the dialysis process, minimizing the risks to patient health.