The invention relates to crystalline forms of racemic ilaprazole, 2-methylsulfinyl-5-1H-Benzimidazole. In the preferred embodiment, the electrostatic charge-free solvent-type dryer is constructed by a tank body, a wafer carrier, an elevator means, a tank cover and a conduit for feeding the flow of solvent vapor. The TRACE or lamp wires which connect respective pairs of cross-connect circuits are utilized in an unconventional manner so as to form a scanning bus.