about 1 25 cm in diameter nozzle 43 was a 1 90 cm opening while nozzle 42 was a 1 25 cm opening to illustrate the improvement attained with the invention 1500 grams of microorganism was placed in about 20 liters of water in container 34 container 10 was filled with about 480 liters of water and pump 20 was activated then line 32 was placed in the slurry and valve 33 was opened in about 2 minutes container 34 was empty and the container 10 was full of suspended microorganism at a concentration of about 3 grams per liter to test the quality of the suspension the resulting suspension was poured over a large black surface having a drain the milky white suspension went down the drain leaving behind only small amounts of solids in comparison the same apparatus was used except the 1500 grams of microorganism were added by pouring the solids into the top of container 10 in the conventional manner valve 33 was closed the recirculation pump 20 was activated for 15 minutes and the resulting suspension tested as before as the suspension drained a white film was left behind on the black surface indicating incomplete suspension of the microorganism thus the apparatus and method of the invention provides faster and more complete suspension of the microorganism while the.