Argos C4050 Polypropylene Sterile Disposable Blue L-Shaped Cell Spreaders (Case of 500) Disposable Blue L-Shaped Cell Spreaders are ideal for spreading bacterial cultures evenly Spreaders are manufactured of polypropylene and are pre-sterilized, eliminating the need for flaming or autoclaving The L-shape allows application on the entire petri dish or plate surface Smooth spreading surface with slight upward return reduces the risk of damaging agar sample