4L cold trap that efficiently traps water vapor and toxic substances discharged from vacuum oven and rotary evaporator to protect vacuum pump. Excellent choice to extract acid and organic solvents with the optional glass condenser. Efficiently reduces vapor inhalation amount to the vacuum pump. Can be used as a low temperature tank as well as pre-cooling tank. Utilizes R404A. Space saving and highly mobile on wheels. Max. low temp -85 C. Dehumidifying capacity max 1.0 kg.