Hand wiping sample
Hand wiping samples were collected from 35 incense packing 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 was wiped 10 seconds on front side as well as back sides and applying to wipe fingers (ASTM D 6966-08, 2008). Then the samples were contained in zip-lock bags. So the Z patterns were shown in Figure 3.7.