APPARATUS FOR CHEMICAL-PHYSICAL ANALYSIS, NAMELY - MICROPROCESSORS FOR AUTOMATION AND DATA HANDLING OF CHEMICAL-PHYSICAL ANALYSIS; SAMPLING ACCESSORIES, NAMELY - PROBES, PRESSURE REDUCERS, FILTERS, COALECERS, SEPARATORS, FLOW CONTROLLERS, SAFETY VALVES, NEEDLE VALVES, MANUAL/AUTOMATIC SAMPLE INJECTION VALVES, AND MANUAL/AUTOMATIC CHROMATOGRAPHIC COLUMN SWITCHING VALVES