OWL is now very widely used for ontology development and several attempts have been made at incorporating OntoClean analysis into an OWL-based tool. I present here an OWL ontology representing the basic OntoClean distinctions, and a tool and methodology for applying it to OWL ontologies. I briefly touch on the semantic issues implied by using OWL Full syntax to characterize the OntoClean meta-properties as properties of OWL Classes, and how that was solved to employ an off-the-shelf OWL DL reasoner to check the OntoClean constraints on the taxonomy.