hey m8 them eutechs are meant to be waterproof so shouldnt have been damaged buy the dip it took in your tank.

i used to have 1 of those about 5 years ago but mine was handed down to me buy a friend who'd had many years life out of it and after 18 months it started to play up and i couldnt find anyone who sold this brand but i do know that the replacement probe costs 30-35 quid.
as i needed a replacement same day i had to buy a new meter.bought a growth technology ph probe for 60 quid and its still going strong on the original probe which is also replaceable for 30 quid.