Digital Potentiometer is a precision instrument for potentiometric measurements. Results are displayed in milli volts on a direct digital readout by 3½ digit LED display. It is supplied with a set of 4 electrodes viz. Reference, Platinum, Silver & Glass. It is extremely useful potentiometric, ORP and acid base titrations. FEATURES : Highly Stable & Accurate 4 Electrodes for different Titrations 3½ Digit Led Display Rugged & Economical.