Care should be taken to avoid longer exposures as this can decrease the life expectancy of queens. A transparent plastic bag filled with carbon dioxide is useful to treat several queens at a time in their transport boxes. Experiences of more than 60 years are used. The device was constantly improved in the detail. The basic dimensions of this type of device were not no more changed however since more than 25 years.
All functional parts are exchangeable.
Spare parts are easy to procure. Hereby the queen can be brought into a position, which corresponds to natural mating conditions. The ball-guided, the stable construction and the relatively high weight of 3 kg permit a fast and operating without jerking. The insemination process takes up 1 with experienced persons only upto max. The hook-holders can precise be moved back and forth, in both direction turned and into each necessary position be brought.