I just received a confirmation from the company which produce these.

The PH of the final "Energy Drink" is 2.9-3.2 !!!!! <img src="/images/graemlins/shocked.gif" alt="" />

WARNING

If anyone was to use these as their only source of fluid for an extended period of time (such as our special forces), these drinks could quite easily cause Acidosis and lead to death or at the very least severe illness.