SAGUENAY, QUEBEC – (July 9, 2026) – Arianne Phosphate Inc (the “Company” or “Arianne”) (TSX VENTURE: DAN; OTCQB: DRRSF; FRANKFURT: JE9N), a development-stage phosphate mining company, advancing it’s Lac à Paul project in Quebec’s Saguenay-Lac-Saint-Jean region, is pleased to announce that it has shipped samples of purified phosphoric acid (“PPA”) to potential customers for testing. The samples shipped were successfully produced at pilot scale (see Press Release dated June 18, 2026) by combining Arianne’s high-purity, low-contaminant phosphate concentrate with Travertine Technologies’ (the “Partnership”) proprietary process for producing PPA while allowing for the recapture of the sulphuric acid used in the process. Internal testing of the PPA produced met specifications required for the product’s use in various technical applications including LFP batteries. Following this milestone, samples have now been sent to potential customers for their assessment. These first samples of PPA were sent to companies covering three separate industries: a CAM (cathode active material) producer for ultimate use in LFP batteries, a diversified industrial chemicals producer that uses PPA for water treatment and pulp & paper applications and a specialized liquid fertilizer producer. The testing that will be performed is the first step in the qualification process required in securing commercial