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This simple equipment is a very handy piece of laboratory plasticware used in various chemical procedures. The plastic stirrers are manually operated to stir or mix the liquids in a vessel. The various grades of plastic stirrers are made of polypropylene, virgin polymers, HDPE, LDPE, etc. The cross-section of plastic stirrers varies in consonance with the application requirements. Few stirrers come with a flat head while others come with starred stirring end.