WTW Sensor Acc A 925/k Unit EA. The electrode with a Pt value shows that the electrodes are in the acidic or the basic (sodium or calcium) position. The electrode with a Pt value shows the electrodes that are in the acidic or basic (sodium or calcium) position. When inserting the electrodes into the sample tube the sensor body temperature will increase and the electrodes will cool. When the temperature gets too cold the temperature will drop and the sensor will drop. Specifications for WTW Sensor Acc A 925/k 903836: Catalog number: 97043-022 Type: EQUIP PARTS AND ACCESSORIES ONLY Description: SENSOR ACC A 925/K Supplier Number: 903836 Package Contents: WTW Sensor Acc A 925/k 903836 / 97043-022 The WTW Sensor Acc A 925/k 903836 is a quality addition to the WTW lineup. For more great deals on pH Meters by WTW please browse our WTW pH Meters page. WTW Sensor Acc A 925/k 903836 Unit EA