Ardrox 906 WW Visible Penetrant Ardrox| 45056 Ardrox 906 WW Visible Penetrant Print Ardrox| 45056 Ardrox 906 WW Visible Penetrant Water Washable Visible Penetrant. To be used during the liquid penetrant inspection process in conjunction with Ardrox 9PR50 cleaner and Ardrox 9D1B non-aqueous developer. 906-4: Ardrox 906, 16oz (473ml) aerosol can (Case of 12). 906-1: Ardrox 906, 5gal (18.9L) pail. 906: Ardrox 906, 55gal (208L) drum. Contact us for a demo or to discuss your application, requirements, available options and/or receive a quote. Request for information