Merit W4000 has a glass construction with long life metal heating element. Merit water still at W4000 and it available with economical price. The unique condenser design ensures that the droplets of distilled water remain in contact with the cooling coil for the longest possible time producing cold distilled water and pre heating the boiler feed to increase efficiency. Built in acerbic extension funnel and drain stopcock grant easy descaling without dismantling the glassware. It combines economy and high performance with a host of other features which comparable stills cannot match. The Merit is the optimal elite for budget conscious laboratories that can't afford to compromise on quality. It has two independent safety thermostats. Screwthreads are incorporated on all water connections so hoses can be fitted and removed easily and safely without risk of breakage.