The Wheaton Modular Cell Production Apparatus is ideal for vaccine production or high yield needs, and added decks will hold additional bottles, as needs increase. Wheaton Roller Apparatus accommodates standard culture vessels, 108 to 121 mm in diameter and up to 550 mm long. The system comes equipped with a powerful DC motor, with soft-start speed control, and a five-position roller deck to which additional roller decks can be added. The all-position drive model is a positive traction drive system for lightweight plastic bottles in which each roller is individually driven. The all-position drive option may be field-retrofitted (see 348940 series) or factory-installed (see 348960 series). Also included is a locking speed control knob that prevents accidental change in rotation rates. All units conform to UL, CSA, and CE Standards; provide up to 75,000 cm2 total surface area for cell growth, and greaseless bearings prevent leaching and eliminate bearing seizures; 1-year warranty. The Modular Cell Production Apparatus is supplied without vessels. This unit is available with one of seven standard electrical plugs shown below. Additional configurations are available through special order. Backup battery systems and rotation alarms can also be added to any Wheaton Roller Production Equipment. Warning: Not to be used in temperatures exceeding 40°C. Specifications: Electrical requirements: All units are 50/60 HZ, 35 watts. Bottle speed: .25 to 5.3 rpm. Special speed ranges are available upon request. Weight: Base Unit with 1 Deck is 70 lbs, each additional deck is an additional 21 lbs. Dimensions: Base Unit with 1 Deck: Width 29-3/4 x Depth 24-3/8 x Height 13-1/2 inches. Each additional deck is 7-1/8 inch high.