PH/OXI 340I SET,ROBUST AND WATERPROOF HAND HELD MULTI-METER FOR BATTERY OPERATION OR WITH OPTIONAL MAINS SUPPLY. SET WITH CASE STAND , SENTIX 41 PH SENSOR, DIN PLUG, CELLOX 325 OXYGEN SENSOR 3 EXCHANGE MEMBRANE HEADS, CLEANING SOLUTION, ABRASIVE FO 1 * 1 items