The JB200 is the only vaporizer on the marked with a built-in sliding stop for the acid tray. This feature prevents the hot, acid-filled tray from sliding down the heating element into the hive during evaporation. This also prevents the tray from tipping sideways and spilling the acid.
The JB 200 high-speed oxalic acid vaporizer comes with a free-standing acid tray and a heat protector to prevent scorching. The acid tray has no contact with the metal screen or wooden bottom in your hive and evaporation of the acid starts in approximately 15 seconds.