Non-absorbent cotton roll is widely used in plant tissue culture laboratories for sealing culture tubes, flasks, and other glassware to maintain sterile conditions during media preparation, inoculation, and incubation processes. It provides excellent airflow and gas exchange while effectively preventing the entry of dust particles, microbes, and other contaminants. Made from high-quality purified cotton fibers, it offers good elasticity, uniform texture, and easy handling for laboratory applications. Non-absorbent cotton is also suitable for cleaning laboratory instruments, wiping surfaces, and general microbiological and research applications where contamination control is essential.