Gable covers prevent cross-contamination by diverting condensation to the sides for return to the bath medium. Semi-transparent polycarbonate construction permits viewing during operation. Cover may be attached to the side of the bath allowing condensation to flow back into the medium, reducing moisture loss and water accumulation on the lab bench. Cover includes handle. Gable covers recommended for efficient operation above +60°C. Stainless steel cover recommended for temperatures above 75°C. For use with Lindberg/Blue M water baths.