The Batch-Pro series kettle-style cookers for potato and vegetable chips offer proven capacities of 650-700 lb. per hour, according to FOODesign Machinery & Systems Inc. In addition, the systems—available for use with natural gas, propane and propane/butane—are built to exceed thermal efficiency of up to 84%. The company says the engineered thermal-heating systems incorporate flow-control systems with tube configurations that ensure even heating throughout the cooker and continuous operation without tube degradation. Batch-Pro cookers come in a wide range of configurations. Systems are available with automated stirring, continuous fines removal, continuous filtering, integrated hood and lift, demisters and programmable logic controllers.