1. Cut out a 0.5–2.5 cm2 sample from the paper or similar material, and then cut it
into smaller pieces. Transfer the pieces to a 1.5 ml microcentrifuge tube (not
provided).
Note: Before cutting out the sample, surface contamination can be reduced by
using a swab moistened with distilled water.
2. Add 300 µl Buffer ATL and 20 µl proteinase K, close the lid, and mix by pulsevortexing
for 10 s.
3. Place the tube in a thermomixer or heated orbital incubator, and incubate at 56°C
with shaking at 900 rpm for at least 1 h.
If using a heating block or water bath, vortex the tube for 10 s every 10 min to
improve lysis.
4. Briefly centrifuge the tube to remove drops from the inside of the lid.