A standard 43mm (1 ½ inch) solvent weld waste pipe (available from DIY stores or plumbers merchants) is pushed firmly into the drain outlet of the drain supplied with the kit, this is secured with an appropriate solvent weld glue (available from DIY stores or plumbers merchants) and connected to the nearest soil pipe using standard jointing products. After allowing the weld sufficient time to set it is advised to test the connection by pouring a cup or two of water down the drain and checking for leaks BEFORE continuing with the fitting of the WetBase.