FRACTION COLLECTORS AND COMPONENTS THEREOF FOR BIOLOGICAL AND CHEMICAL LABORATORY ANALYSIS AND PROCESSES-NAMELY, TUBE RACKS, ROTATOR, TUBE RACK HOLDER DISC, TURN TABLE DISC, DUST COVER, CONTROLLER, POWER SUPPLY, DISTRIBUTOR, SYPHON STAND, SYPHON HOLDER, SAFETY CATCHER, GUIDE PLATE, HOSE HOLDER, SPIRAL GUIDE, TIMER, AND ADAPTER

modular shelving units, namely, pallet racks and pre-engineered upright supports and horizontal beams interconnected into a boltless unit