The PHCbi brand -40 C Biomedical ECO Dual Chamber Freezer is designed for storage of enzymes, vaccines, pharmaceutical products and other biomedical materials at uniform temperatures. High performance refrigeration systems provide responsive cooling. A manual defrost function eliminates temperature fluctuation. Each chamber operates over a range of -20 C to -40 C, with separate setpoint in 1 C increments. The two door design minimizes exposure to stored product.