The balance, pH that is.

It is past 12:00 midnight already and I am still up. I should be sleeping right now so I could get up at 2:00 to prepare for our unit outing. Unfortunately, sleep is very elusive. I have popped Benadryl already but I have lost count of sheep jumping over the fence and I am still wide awake. I decided to just browse the internet and chanced upon these ph meters. I cannot believe that they are now available and they are cheap.