The strip (10) has a flexible conveyor band (12) wounded on unwinding and winding reels, and a number of test fields (14) attached to the band and distributed in a band longitudinal direction. The test fields include a detection layer (18) and a spreading net that covers the detection layer for accommodating laminar liquid samples. The spreading net is formed as a grid-like woven fabric (20) having woven-fabric threads that cross at right angles. The woven fabric is oriented angular to the band such that the woven-fabric threads run angular to the band longitudinal direction.
