What type of filters can be placed inside needles to ensure purity?

Filter needles are specifically designed to prevent particulates from entering a syringe or a vial while drawing up or injecting medications. These needles contain a built-in filter that captures particles and contaminants, thus ensuring the purity of the medication being administered. This is particularly important when handling medications that might be prone to contamination or when drawing from multi-dose vials.

In a pharmacy setting, using filter needles is essential when dealing with cytotoxic drugs or other medications that may have solid particles that could pose a risk to patients if injected. The use of filter needles demonstrates a commitment to patient safety and the integrity of pharmaceutical preparations.

While membrane filters are used in other processes, such as sterilizing solutions or air, and HEPA filters are effective for air purification in certain environments, filter needles are the precise tool needed for ensuring the purity of injectable medications. Intake filters usually refer to different applications and don't specifically address the needs of ensuring medication purity during administration.