2” base material & ~1.5” Base material & catalyst mixed with catalyst spatula Mixed for -20-30 seconds until Mikrosil® ready for immediate blue color disappears application

When the castings are applied to the back of a clear acetate fingerprint card, clear tape or white address labels can be used to affix them to the back of the card. In order to ensure the castings are secure on the card, a large adhesive lifter (size 8”3 8”) can be placed over the backside of the acetate fingerprint card covering the castings. The acetate card is then placed onto a flatbed scanner and scanned into a digital fingerprint image (Figure 4.8). The resulting castings depict friction ridge details in black and are in the correct orientation for comparison to antemortem records.