FireIce SG oh no! he is going to splash on lin zhi ling! http://www.sgforums.com/?action=thread_display&thread_id=221157
huiz SG how old are you? i dont think you can buy strong acid so easily. the fumes itself is very harmful and you need a fume cupboard to prepare it.
nightzip SG tot you need a license to buy one? for strong acid? Else go check yellow pages loh...see those chemical companies...think for normally concentration etc can order or buy, e.g. h2so4, hcl, etc... the others you have to mix yourself...
viewquek SG If for project get it from ur school. HCl can be brought at hardware shop. It use by renovation contractor to clean ceramic after laying. Concentration: 33% H2SO4 is used by chemical industry. Commercial grade: 98% pure Nitrate Acid is use for cleaning Commercial grade: 66% pure. U can get it from shops that sell lab equipment. I had all this stuff but cannot give it to U. Because under control, Poison substances act.