Hanna Instruments Laboratory Division has released the HI 253 and HI 254 bench pH/ORP meters, providing accurate and precise measurements for all laboratory needs.
The HI 253 can perform ion-selective measurements directly in ppm, as well as pH, ORP and temperature measurements. The HI 254 can be used for pH calibration with five points selectable between seven memorised buffers to provide a very accurate calibration curve even when testing difficult samples where very wide differences in pH can be found. Non-volatile memory allows both meters to store up to 50 data sets that can be downloaded to a PC. These instruments also have GLP features so the user can recall the calibration data at any time. The HI 253 and HI 254 are both supplied with a pH electrode, a temperature probe for automatic compensation for pH measurements and ready-to-use calibration solutions.
They are also supplied with a HI 1131B pH electrode, a HI 7669/2W temperature probe, pH 4 and pH 7 buffer sachets (20mL each), electrode refilling solution, an electrode holder, a 12 Vdc power adapter and instructions.