Ultrasonic cleaning method and apparatus

An apparatus suitable for ultrasonically cleaning objects, comprising:

• a housing comprising a base, a side wall extending upwardly from the base, and an upper region, wherein the upper region of the housing defines at least one recess;
• a cleaning chamber within the housing;
• a drainer for insertion into the cleaning chamber which is moveable between a cleaning position in a lower region of the apparatus and a draining position in an upper region of the apparatus, wherein the drainer comprises a perforated side wall defining at least one integral flexible tab dimensioned for insertion into the at least one recess of the upper region of the housing to position the drainer in the draining position, wherein the at least one tab is moveable from at least a first position extending outwardly from the side wall of the drainer for engaging the at least one recess of the upper region of the housing when the drainer is in a draining position, and at least a second position substantially flush with the side wall of the drainer to allow the drainer to be inserted into the cleaning chamber;
• and
• a transducer for transmitting ultrasonic energy into the cleaning chamber.