Sparc Technologies has announced positive results from 16-week cyclic corrosion testing of HydroGraph Clean Power's Fractal Graphene within Sparc's ecosparc® additive in solvent-based protective coatings. A commercial solvent-based coating dosed with ecosparc® containing HydroGraph's graphene reportedly showed a 25% improvement in corrosion resistance (scribe creep) compared to the same coating unmodified, under ISO 12944-6 testing methodology corresponding to C5 Very High (C5-VH) durability.
The result builds on water-based testing Sparc conducted with HydroGraph's graphene last year, which showed up to 60% improvement in corrosion resistance and led the two companies to sign a Letter of Intent (LOI) in March 2026 to evaluate HydroGraph's Fractal Graphene in ecosparc® more broadly. Extended 25-week (4,200-hour) cyclic corrosion testing is now underway, with results expected in November 2026. Subject to a positive outcome there, Sparc and HydroGraph plan to negotiate a definitive commercial supply and collaboration agreement.
Sparc Managing Director Nick O'Loughlin said the results provide further confidence in deepening the companies' collaboration in protective coatings, adding that securing high-quality, sustainably produced Western graphene supply remains a key focus as Sparc expands its customer base. HydroGraph President and CEO Kjirstin Breure said the findings add to a growing library of verifiable data on the performance benefits of integrating HydroGraph's Fractal Graphene across industrial applications.
Separately, Sparc is currently running a non-underwritten share purchase plan (SPP) to raise up to A$1.75 million (about $1.25 million).
