Lindberg/Blue M's Laboratory and Scientific Gravity Convection Asphalt Drying Ovens have been designed for used in a wide range of specialty ASTM or general purpose applications including Thin Film and Loss on Heating tests. Controller is has a single setpoint with simultaneous LED display of actual temperature vs. setpoint. May be configured to display temperature in °C and °F. Microprocessor automatically optimized control parameters during operation. Main power on/off switch on control panel. Overtemperature control is standard. Painted cast aluminum rotating shelf allows four or more samples to be tested at one time. Motor and gear reduction drive system isolated from oven chamber for cool, long life, non-vibrating operation. No repairs or servicing required. Drive shaft and shelf easily removed to permit general utility use of oven. Double wall painted steel exterior and stainless steel interior. Observation door window is standard 12.75"W x 9.25"H. Oven door includes two pieces of heavy tempered glass with dead air space equivalent of door thickness. Two nickel-plated steel shelves, adjustable to 6 positions are supplied for general utility use. Voltmeter indicating power to heating elements included. All wiring complete and enclosed. Two thermometers included: ASTM 13C and 0 to 300° C.