Diluents are interchangeable, as most are only sterile water.

The statement that diluents are interchangeable because most are only sterile water is not accurate. While some vaccines may be reconstituted with sterile water or saline, it is crucial to understand that each vaccine is specifically formulated for use with a designated diluent. This ensures the vaccine maintains its efficacy and safety. For example, some diluents might contain additional components necessary for the stability and effectiveness of the vaccine.

Interchanging diluents could lead to inadequate vaccine preparation, potentially compromising the immune response or causing adverse reactions. Always following the manufacturer's instructions regarding the appropriate diluent is essential to ensure proper vaccine administration.

In practice, it is critical to use the diluent specified in the vaccine's packaging or instructions, making it clear that not all diluents are interchangeable. Therefore, while some diluents may be composed of similar components like sterile water, the requirement for specific diluents for each vaccine underscores the importance of adhering to the manufacturer's guidelines.