Inquiry (采购产品): pH Indicator I'm looking for a safe (i.e., with respect to personal health as well as environmental disposal) acidic (5-6 range) pH indicator that I can purchase in the form of bulk concentrated liquid extract and use as a natural organic dye for treating paper. Do you sell concentrated liquid pH indicator extract or know of anyone who does? Thanks, Joe Cook Webster, Texas joscei@aol.com **** Hidden Message ***** Joseph Cook 15318 Bratten Lane Webster, TX 77598 USA Company: Self Title: Engineer Phone: 2814887982 E-mail: joscei@aol.com **** Hidden Message ***** joscei@aol.com
