Gold Hydrogen (ASX:GHY) completed appraisal flow testing at its Ramsay 1 well in South Australia, flowing helium to surface and separating, capturing, and concentrating it onsite, according to a Wednesday Australian bourse filing.

Flow testing confirmed the reservoir was capable of raw gas rates of up to around 128,000 standard cubic feet and helium rates of up to around 24,300 standard cubic feet per day, per the filing.

Air-corrected helium concentrations of up to 30% were measured on site by a gas chromatograph, stabilizing at 19%, the company said. Raw gas helium concentration reached up to 13%.

The company said it plans to progress an accelerated front-end engineering design for a helium-focused development.

Its shares climbed nearly 11% in recent trading on Wednesday.