The multi-element probes screw into the converter in place of the 1⁄2" (13 mm) probe. The energy delivered to each tip is uniform with 2% variation. The spacing between the tips is 2 2⁄32" (18 mm). Coupler and stepped microtips measure 10 1⁄4" (260 mm) long. Probes process from 250 μL to 10 mL sample volume and consist of aluminum coupling and 4-, 8-, or 24-element probes.