Syringe Filter, PTFE, 0.45µm, 13mm Diameter. Denville. around it. Denville Syringe Filters are easy to use. They may be used with any luer-lock syringe and are color-coded for easy recognition. The 30mm syringe filters can filter up to 100mL of sample with a retention volume of less than 100µL. The 13mm filters can filter 5 to 10mL of