The asymmetric unit of the title compound. C12H8N2·C10H10N2·2H2O. contains one half-molecule of phenazine. one half-molecule of naphthalene-1. https://www.jmannino.com/quick-offer-Viqua-F4-50-Plus-Monitored-UV-System-Powered-by-UVMax-15-gpm-230-Volt-on-sale/