The 228 pH meter is an easy-to-use handheld device for measuring pH, mV and °C. With the 228 pH meter, both temperature and pH values can be directly stored onto a SD card (in Excel format), or transferred to a PC through an RS-232 interface. An optional software and data cable for the 228 pH meter are available as optional accessories to transfer data to a computer. Temperature compensation in the 228 pH meter can be done manually or automatically by way of the temperature sensor which is included. 

The pH meter has two calibration points. The calibration can be done with the trimmer on the side of the device which is protected under a cover. With this combined device, the user can determine pH value, temperature or Redox potency (ORP). For the latter measurement parameter, a Redox electrode must be ordered separately from the 228 pH meter. We recommend the ORP-14 electrode. The pH meter is powered by a 9V battery which is included.