My friend just replied to my request about the pH of TF4 and said it is reported to be 8+ which I presume means something just above a pH of 8.00. More alkaline than I thought. JB ============================================================================================================= To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there.