The present invention concerns a procedure and a device to determine the concentration of protamine-1 and protamine-2 and the ratio between protamine-1 and protamine-2 as protamineprotein ratio in a questionable sample from an individual to be examined in order to assess the fertility of the sperm in vitro. The first and second conductive contacts may be coupled to the same semiconductor device or different semiconductor devices. The plurality of fluid outlets are configured to remove the coolant fluid from the coolant fluid chamber. The wrapper retrieves the set of current attribute values in a JIT manner from at least one of the following: the directory server and an external source. A head lamp attached to a bicycle includes a casing, a plurality of adjacently arranged LEDs, and a lens arranged closer to an opening for each LED. In one example, disclosed are cell-free fermentates using Lactobacillus species, Pediococcus species, andor Lactococcus species used separately, in combination, or combined with extract from Delisea pulchra marine algae.