KOLB Retarder Proofer accurately control humidity and temperature to accelerate or delay the proofing process dough so that proofed dough can be ready at any time required. Key features of the KOLB Retarder Proofer are high energy efficiency, using only CFC refrigerants. KOLB Roll-in Retarder Proofer designed for workshops large bakeries or supermarket, it allows to pre-set programs within 24 hours to control the fermentation process of dough.