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.
Polyvinyl acetate (PVA) glue is the most common type of glue out there. Itâs so common that if you have a bottle of glue in your house, itâs likely to be PVA glue. White glue, yellow glue, and bottles of âwood glueâ are all likely to be PVA glue.