The Kilcher Homestead is a 600 acre Pioneer Homestead that has been protected for perpetuity via a ConservatIon Easement. The Kilcher Family has also preserved the Historic Cabin and site as a LIving Museum.
Yes, negative pH is possible, but not in water as a solvent. The range of pH in water is 0 to 14 (to be more precise, it is -1.7 to 15.7, but for simplicity's sake, we start with the usual values.) Thus, what pH indicates is the ability of the acid to form H3O+, which can then donate a proton.
A pH less than 7 is said to be acidic and solutions with a pH greater than 7 are basic or alkaline. Our ideal pH is slightly alkaline - 7.30 to 7.45. You can test your pH levels regularly by using a piece of litmus paper in your saliva or urine first thing in the morning before eating or drinking anything.