Electrolyzed water containing chlorine gas and hydrogen gas is provided, wherein the electrolyzed water has improved storage stability and provides satisfactory cleaning efficiency. According to such a resist composition, a resist pattern can be formed which displays little surface roughness and line edge roughness on etching, and also offers excellent resolution and a wide depth of focus range. The lead also includes a first arm member having a distal end and a proximal end coupled to the lead body proximal of the distal tip; and a nosepiece, at least a portion of which is biodegradable.