Constructed from superior polyethylene, this microcatheter is celebrated for its exceptional durability and chemical resistance, rendering it suitable for an array of research scenarios. One of its standout features is the dramatically reduced inner volume, which significantly curtails fluid waste while amplifying the precision of fluid delivery. This is especially crucial for experiments that require meticulously accurate fluid dosages. Furthermore, the incorporation of a 4-way stopcock not only broadens its compatibility with industrial-standard syringes but also streamlines the experimental setup by negating the need for additional adapters, thereby enhancing procedural efficiency.