The Wallach N2O Cylinder is made for use with the LL100 Cryosurgery Unit (#900001) and WA1000B Cryosurgery System. Warranty: 1 Year - Free from Defects in Material and Workmanship. The N2O Cylinder (20 lb) offers approximately 80 minutes of freeze time. It is provided unfilled, but can be filled locally at a medical gas supplier. Configurations Wallach N2O Cylinder Configurations Part Number Type Volume #901062 'E' Type 0.3 L #901060 Standard 0.5 L Accessories Wallach N2O Cylinder Accessories The following accessories are compatible and commonly purchased with the N2O Cylinder: #901000: 'E' Cylinder Adaptor - N2O (Note: Required to connect the LL100 Cryosurgical Unit to an 'E' Type Cylinder). #901001: 'E' Cylinder Handwheel. Cylinder Cart: #901010: For 'E' Cylinder. #901011: For Standard Cylinder. Literature Wallach N2O Cylinder Literature Wallach Cryosurgical Systems Sell Sheet