An example for specifi c product developement. The demand of the customer was to manufacture an easily adjustable double-channel-capillary with a defined distance. The capillary served to study the reaction of bees dedicated to an exposure of substances in the air. Thereby the antenna of the bee were specifically target at the two capillaries. The capillary was a solid body for the intake of the module and two fl exibles feed lines out of coated glass. These could be freely bended to guarantee an optimal connection.