It are designed for precise and efficient filtration of liquids and gases in laboratory environments. Made from high-quality PTFE (polytetrafluoroethylene), these filters offer excellent chemical resistance and are ideal for filtering aggressive solvents and chemicals. With a pore size of 0.22µm and a 25mm diameter, these filters are perfect for removing fine particles and contaminants from your samples. The white color aids in easy identification, and the pack of 500 provides a cost-effective solution for high-volume laboratory applications.