Abstract: To permit versatile application of a washing machine for bottles of different sizes and shapes, a rotatable frame is located within a vessel, the frame having secured thereto a plurality of bottle holding, or retaining boxes, each adapted to hold one, or more bottles, which boxes are made of mesh, or similar material, and have an open top, the frame being arranged with holding means for mesh, grid or other tops, at different heights above the bottoms of the boxes; the frame rotates in the vessel, to dip the bottles into cleaning, rinsing and other treatment solutions and, when the bottles are facing upside down, spray means are arranged to spray washing liquid into the bottles. The vessel may be strong enough to accept pressurized steam for sterilization of the wash bottles.