FOR THE SUPPLY AND DELIVERY OF INSTRUMENT GRADE GASES FOR INDUCTIVELY COUPLED PLASMA (ICP) AND ATOMIC ABSORPTION SPECTROPHOTOMETER (AA) AT MOGALE CITY LOCAL MUNICIPALITY (MCLM) – SCIENTIFIC AND QUALITY CONTROL SERVICES LABORATORY O AN AS AND WHEN REQUIRED BASIS FOR A PERIOD OF THREE (3) YEARS AND MONTHLY RENTAL OF GAS CYLINDERS THEREOF.