© 2014 IEEE. Standing wave striations at frequencies below 400 kHz are observed in DC H2 microplasma discharges at pressures up to 7.8 atm. Striations are observable in low-current (1-5 mA) discharges, with a passively stabilized external circuit. Striation spacing ranges from 17 to 34 μ) m, with higher pressure and lower current producing smaller spacing. These striations indicate the continued applicability of Knudsen (Kn) number-based scaling laws over several orders of magnitude in pressure.