FLOTE-TECH Model A Separation and Recovery With Water and Diffused Air A New Approach: Now, soil and sediment samples can be processed more rapidly by a high- efficiency process, utilizing a closed system and requiring only 100 gallons of water. Artifacts, fossils, invertebrate life forms, charcoal and other evidence can be removed from samples in the two-mode system. The system is portable and can be used in the laboratory or in the field. Dispersing agents can be used in the system and continuously recycled. Separation and recovery expenses are cut by reduced water usage and rapid processing. The unit can accommodate up to a 20 liter sample and can be used in the field where there is no available water.