BD PosiFlush™ Externally Sterile (XS) Saline Flush Syringe is terminally sterilized in its peel pouch, enabling it to be aseptically presented to a sterile field. Typically used in interventional radiology and critical care, the syringe supports applications such as PICC insertions. It is intended to be used only for the flushing of indwelling vascular access devices.