This is a sole source notice for a firm-fixed-price contract to Airgas USA LLC for high-purity gas delivery and cylinder leasing at the Mid-Atlantic Regional Materials Test Laboratory. The required gases include hydrogen, argon, zero-grade air, oxygen, methane/argon mix, and nitrogen in specified cylinder quantities. Performance will include a one-year base period in 2026. The solicitation is expected to be available by August 2026. No budget amounts are specified.