This microcatheter is constructed from superior polyethylene, known for its outstanding durability and comprehensive chemical resistance, making it ideal for the wide-ranging conditions encountered in laboratory research. The introduction of a dramatically reduced inner volume is crucial for minimizing fluid waste and maximizing delivery accuracy, essential for experiments requiring precise fluid dosages. The 4-way stopcock not only guarantees seamless compatibility with industrial-standard syringes but also significantly simplifies the experimental setup by eliminating the need for additional adapters, thereby enhancing procedural efficiency and offering greater control over fluid direction.