Recovery of an alcohol such as ethanol from a crude alcohol product, preferably obtained from the hydrogenation of acetic acid using a low energy process. The sidewall includes a plurality of side panels, wherein each includes opposing first and second side edges and opposing first and second end edges. In order to achieve these objects, the present invention provides a resin liquid for an optical fiber coating layer containing at least one resin, wherein the resin liquid contains fewer than 500 pieces of extraneous material per 1 ml of the resin liquid, which have a minimum length of 0. The grid additionally includes a perimeter band that peripherally surrounds the dividers and is connected to opposing ends of each divider. The inventive driver circuit has a low power consumption and generates only few heat.