Polymethylpentene box is used to stain, fix, destain and handle electrophoresis gels and membranes with less chance of damage than conventional methods. Hold 500 to 750 ml of liquid when a gel is in place. Both box and polypropylene copolymer cover will resist temperatures from -70°C to +70°C and have good chemical resistance to acids, bases and select organic solvents. Allow easy liquid drainage with minimal gel handling. Low-density polyethylene plug will not interfere with the cover or the contents of boxes.