The Smiths Medical 4629P-2 is a comprehensive arterial blood gas collection kit. It includes a 1ml syringe, which is specifically designed for blood gas collection and is fitted with a 23G x 1-inch needle. The needle is of high quality to ensure smooth and painless penetration. The syringe is prefilled with 25IU of dry Lithium Heparin (LiHep), which acts as an anticoagulant to prevent the blood from clotting, ensuring accurate test results. This kit is sterile, ensuring it is safe for use and reduces the risk of infection. It is designed for single use to further prevent cross-contamination. The kit comes in a case of 200, making it an economical choice for busy medical facilities.