4.1.3. Bee examination
1. Collect 200–250 bees from both sides of at least 3 unsealed brood combs.
2. Kill the bees in a container filled with alcohol.
3. Stir the container for 10 min.
4. Separate the bees from the mites by pouring the alcohol over a sieve with a mesh size of approximately 2–3 mm.