# '''Light liquid capture and retention test''': An optional test in which beads with a density similar to motor oil are pre-loaded into the unit and the number of beads in the effluent during pre-loading and testing are measured to assess the capacity of the unit to trap and retain light liquids. | # '''Light liquid capture and retention test''': An optional test in which beads with a density similar to motor oil are pre-loaded into the unit and the number of beads in the effluent during pre-loading and testing are measured to assess the capacity of the unit to trap and retain light liquids. |