amp + power = 2kg; box of 18 petri dishes = 2kg; 3 amps and 4 boxes = 14 kg. few kilos for the luggage itself, plus a can of graphite and wax; oh, and the bloody power adaptors of the raspberry pi. hopefully <23kg in sum. https://octodon.social/media/qoZjeJXDOHKxqE3np54