swimming pool ph monitoring

hi good day i am designing a system to monitor the ph of a swimming pool . i want to output the ph value to a lcd could you advice me on how to proceed with something like this. i bought a arduino uno, a atlas scientific ph probe and a lcd. the links below shows what i bought.

http://www.ebay.com/itm/290825687841?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649 http://www.ebay.com/itm/190830706043?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649

What have you tried?

i was just reading forums and didnt quite understsand how to translate the volatge readindg of the ph probe to a actual ph value to be displayed on the screen.

Perhaps try looking at the example code to see how they do it?