Peer-reviewed research proves that HydroGraph ultra-pure graphene offers cost-effective, reusable adsorption medium for wastewater purification VANCOUVER, British Columbia, Sept. 03, 2025 (GLOBE NEWSWIRE) — HydroGraph Inc. (CSE: HG) (OTCQB: HGRAF) (“HydroGraph”), a leading producer of ultra-pure graphene, today announced the publication of a peer-reviewed study that demonstrates the potential of using HydroGraph graphene as a […]