Hand wiping samples are collected from 6 separating electronic waste workers and used 20% isopropanol (Duggan, 1985) Gauze Pads wiped the hand surface, side to side of vertical and horizontal axis in “Z” wipe pattern. One hand is wiped 10 seconds on front side as well as back sides and applying to wipe fingers (ASTM D 6966-08, 2008). Then the samples are contained in zip-lock bags. So the Z patterns are shown in Figure.