pX 4 Tester kit + case

pX 4 Tester KIT – 0,01 pH resolution, ORP (-1000 / + 1900 mV), mV for electrode quality test, ORP with customer calibration point, °C/°F, replaceable sensor, accessories and quick guide included – Plastic Case – PC version – includes: 1 x 55ml pH 7 and pH 4 colored buffer solutions, 1 x 55ml EC 1413 calibration solution, electrode storage solution, string for neck, tissues, 2 x 1,5V AAA batteries.