The 1/8" MNPT x 1/4" HB fittings Pack is the replacement fittings for EZwaste Solvent Waste System's fittings. It includes (25) 1/8" MNPT x 1/4" Hose Barb fittings. These tube fittings secure waste tubes to carboy providing the closed system necessary to prevent spills. The EZwaste Solvent Waste System is designed to be an affordable solution for HPLC liquid waste disposal. Each system is manufactured to safely collect waste from two HPLC machines. This system features an activated carbon filter which traps volatile organic compounds from being released into the air. This prevents chemicals from being inhaled by lab workers and provides an easy mechanism of disposal for vapor wastes. The EZwaste Solvent Waste system also features a closed loop design which protects against leaks and spills, improving overall lab safety.. For solvent waste system. 1/8" MNPT x 1/4" hose barb. Made of polyethylene. Black color. . Thomas 330-0946-TMS EZwaste Fitting for Solvent Waste System, 1/8" MNPT x 1/4" Hose Barb, Polyethylene, Black, Pack of 25. Country of Origin : United States. Part Number : 1171W57PK. Pack of : 25.