The Smiths Medical 4046-2 is a kit designed for arterial blood gas collection. The kit includes a 3ml syringe pre-filled with 25IU of dry Lithium Heparin (LiHep), which is used as an anticoagulant to prevent the blood from clotting. This kit is designed to provide a quick and efficient way to collect arterial blood samples for testing blood gases. It is packaged in a case of 200 units, ensuring you have plenty on hand for multiple procedures. Please note that this product is for single-use only and should be disposed of after use.