The invention relates to a a device for white balancing a medical video scope comprising a housing having an outer surface defining an opening, an interior of the housing defining a canal having a first end communicating with the opening and a second end terminating within the housing for accommodating a surgical defogging material and for receiving a distal lens of a medical video scope, a white balancing reference material disposed adjacent to the second end of the canal, and a self-sealing mechanism disposed within the canal, the self-sealing mechanism disposed within the canal, the self-sealing mechanism being configured to allow for a medical video scope to enter the canal and make contact with the surgical defogging material and to prevent surgical defogging material from spilling out of the canal. mechanism.
