In a message dated 7/9/2009 10:28:31 A.M. Eastern Daylight Time, pastone@xxxxxxxxx writes: This is measured indirectly, but for MOST intents and purposes, at room temperature, it's basically 14 - pH. Interestingly, decreasing the temperature can decrease the pH. ---- And the taste changes accordingly, I expect. Incidentally, do you think the tongue is otiose? I mean, for philosophical purposes, it's _OBVIOUS_ that's it's the sense of TOUCH -- what the tongue does. It touches those ions, and thus they taste more or less 'acid'. What sense are we to make that water is tasteless? If it's COLOURLESS why is it visible? Or perhaps it's not and that's why we call it trans-lucid? Oddly, Putnam mentions that in Mars, with their twater, they would have twater-based lubricants, too. In this respect they seem to operate better than the water-based ones. No? I miss K. Trogge -- I suppose he must be busy paying a visit to Christopher Bruce in Kiel, Germany. I know see that he _wanted_ to deafen and blind his 12-month neighbour, to repeat the Helen Keller experiment. Wicked mind! (Someone should stop him -- I think it's Helen Kohler -- he said the surnames were cognate). What's the big deal with water-based lubricants? Are they supposed to be better because you can water-wash them more easily? Later, JL Speranza Buenos Aires, Argentina **************Dell Studio XPS Desktop: Save up to $400 - Limited Time Offer (http://pr.atwola.com/promoclk/100126575x1222466512x1201463496/aol?redir=htt p:%2F%2Faltfarm.mediaplex.com%2Fad%2Fck%2F12309%2D81939%2D1629%2D3) ------------------------------------------------------------------ To change your Lit-Ideas settings (subscribe/unsub, vacation on/off, digest on/off), visit www.andreas.com/faq-lit-ideas.html