The pH meter

This portable pH meter can be used to measure the pH of water. 
Dip only the bottom part of the instrument into the water, and wait for a steady reading.
Care should be taken to avoid breaking the glass electrode. 
While it is quite well protected for normal use, it will probably break if you drop it. 
Please tell us if you get it wet so we can rinse it with distilled water, dry it out and hopefully save it.

Picture from website of Omega pH meters