pH Probe Module

Has anyone tried to design a module that works with a pH probe for measurements?

There is one :

http://www.loveelectronics.co.uk/products/214/ph-and-temperature-module

No, but the series of articles here DIY pH Meter - Sparky's Widgets recently had me thinking… Not that I need one, but I was thinking a nice pH probe to measure my pool’s pH and fish tank pH would make sense.

Edit: ooh, I didn’t know Love had made one!