This 47mm fritted all-glass support base with tubulation is designed for assembly with either the 300 mL graduated glass funnel Cat. No. 33971-300 or 1000 mL graduated glass funnel Cat. No. 33971-1L.
Disclaimer: This product is not intended to mitigate the presence of microorganisms on surfaces or in the environment, where such organisms can be deleterious to humans or the environment.