Mark the hive correctly
In all cases, the hive being sampled should be marked to match it to the sample sent to the laboratory for diagnosis. A mark should be used which refers to both the apiary and the hive (e.g. “A” for the apiary, and “1” for the hive, so “A1”).
The mark should be made in large print, using a crayon or indelible marking pen. The mark should be put on a super, rather than on a lid, in case several lids blow off hives before the apiary is revisited.