And, in the other two opposite corners one lamp was located
in each, atmid height. All the lamps formed a tunnel treatment zone
of 30 cm × 30 cm× 110 cm. The top of the tunnel began with a 50-mmhigh
sieve of 150mmdiameter, ISO-3310.1 of 200 μm (CISA, Barcelona,
Spain) attached to a shaker (Heidolph Vibramax 100, Germany) in
which the product to be treated was placed.