via tubes 15 17 19 in fig1 a and 15 19 in fig1 b and wash solution is reintroduced via nozzles 30 32 34 in fig1 a and 30 34 in fig1 b the nozzles are positioned in front of respective tubes in the view of fig1 a and 1b in particular the nozzles are angled toward the front of the respective cuvette 12 out of the page in fig1 a and 1b to avoid disturbing the pellet of solid phase 14 collected at the respective magnets of the array 16 the tube 21 at position n of fig1 a and 1b is employed to aspirate liquid phase from the respective cuvette 12 prior to the introduction at position p of reagent via nozzle 36 the reagent facilitating a subsequent chemiluminescent reaction within a luminometer in contrast to the non resuspension wash nozzles 30 32 34 in fig1 a and 30 34 in fig1 b the reagent dispensing nozzles 36 are angled toward the pellet of solid phase 14 in order to thoroughly disperse it in prior art magnet arrays a portion of the liquid phase may remain trapped within the solid phase 14 prior to introduction of the reagent at position p even after repeated non resuspension washes such as at positions f g and m in fig1 a and positions f and m in fig1 b this.