man it is not the color ..which matters the colour depends on the indicator.. in the pH scale O is very acidic and 14 is very basic.7 is neutral. pH do not depend on colour.absolutely no relation.........eg : neurotic acid with pH zero is plain like water. Here is another attempt to answer your question: http://en.wikipedia.org/wiki/Universal_i...
Acrylic Adhesives. Acrylic adhesives can either be water-based (this is also referred to as emulsion or dispersion) or solvent-based. Water-based are slower drying compared to solvent-based systems but generally solvent-based acrylic systems have better resistance to other solvents, chemicals and water.
Adhesive: A bonding agent (glue, to the rest of us) used to affix one item to another. For crafters, adhesive choices include tape, glue, epoxy, glue sticks, hot glue, rubber cement, and spray adhesives, depending on the materials to be joined and the strength of the bond that is needed.