The primary purpose of the McLellan mix truck is to mix concentrate from the mix trailers with water and deliver the mixed solution to the sprayers. All of McLellan’s mix trailers are available with an optional dry chemical hopper and a closed chemical dispenser. McLellan has two closed chemical dispensers available. The first is a bulk dispenser that cuts a hole in the jugs of chemicals and triple rinses the jugs. The second dispenser is designed to meter out a given chemical by the ounce. Once the jug is empty, valves are used to triple rinse the jug prior to disconnecting the jug from the dispenser. McLellan offers a number or different dry chemical hoppers depending on the needs of the customer..