Inert atmosphere microscope slide and cover slide irradiation chambers

These two things are optical irradiation chambers which can be kept under nitrogen/argon atmosphere. The sample droplet goes onto a standard-size microscope slide (76x26 mm, the large thing) or a cover slide (22x26 mm, the smaller thing) which is placed into the bottom frame. The top is placed over this and fixed in place with elastic band. The top is closed off with the appropriate Suba-Seal and inert gas can be fed in via needle. The bottom is not gas-tight: this allows gas to seep out along t