Crafted from superior polyurethane, this microcatheter boasts exceptional durability and resistance to a vast array of chemical substances, making it suitable for the diverse requirements of laboratory research. Its design features a dramatically reduced inner volume, critically minimizing fluid waste while maximizing the accuracy of fluid delivery, essential for conducting precise experiments. The 4-way stopcock not only ensures direct compatibility with industrial-standard syringes but also simplifies the experimental setup by eliminating the need for additional adapters, thereby improving procedural efficiency and offering versatile fluid direction control.