Arduino ph monitor

Hi I'm trying to figure out how to setup a ph meter through arduino with data logging through an ethernet connection. I have been looking into this for a while now and haven't found much. Was hoping for suggestions and/or ideas when it comes to approaching this. Thanks

What do you want to measure?

Something like this might be useful to you?

http://www.ebay.com.au/itm/Liquid-PH0-14-Value-Sensor-Module-BNC-PH-Electrode-Probe-for-Arduino-/201477251356?hash=item2ee8fae11c:g:t2oAAOSwNphWXkQN