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ARCAL™ Prime is the premier quality shielding gas for the most demanding welding situations. Designed for TIG (GTAW) and plasma welding of all materials including titanium, MIG (GMAW) welding of aluminum and copper alloys, ARCAL Prime is also a universal root shielding gas for all materials. Boasting of an Argon (Ar) pure at 99.998%, ARCAL Prime ensures a perfect quality weld bead. ARCAL Prime is the pure gas solution for your arc welding needs.