Digital pH Meter with Two Buffers Calibration Option is ideal for continuous 0-14 pH reading & milivolts. Digital Instruments Corporation supplies Digital pH Meter with Two Buffers Calibration Option. Digital Instruments Corporation offers diverse types of table top, online monitoring system ph indictor, table top micro processor base, portable meter, online conductivity & TDS meter, online conductivity & TDS indicator etc in wide Ranges. Digital pH Meter with Two Buffers Calibration Option comes under the model number - DP 505, comes with two modes. 3.5 digit LED display with auto polarity & decimal option is available with this digital pH Meter.