What is the permissible amount of aluminum in a fission 99Mo generator eluate?

The permissible amount of aluminum in a fission 99Mo generator eluate is established to ensure both the safety and efficacy of the radiopharmaceuticals produced. Specifically, the correct option indicates that the maximum acceptable level of aluminum is less than 10 µg/mL. This limit is critical because aluminum can interfere with the chelation process of the radiopharmaceuticals, potentially affecting their stability and bioactivity. Maintaining aluminum levels below this threshold helps to ensure that the final radiopharmaceutical product meets the required safety and performance standards for diagnostic use. High levels of aluminum might lead to adverse reactions or suboptimal imaging results, which is why this specific limit is enforced.