Weld-On® 944ECO™ Pool Medium is an environmentally responsible cement with 30% lower solvent emission rate and significantly reduced odorous fumes than the current solvent cements in the market – resulting in an improved workplace environment for pipe installers. The 944ECO is a clear or gray, low VOC, medium bodied, fast setting, high strength PVC solvent cement for all classes and schedules of PVC pipe and fittings with interference fit through 6 inches (160 mm) diameter, Schedule 80 through 4 inches (110 mm).