sibei sian~.~ kena sodium hydroxide once again ZZ now my skin lyk jelly cool huh^^ zz now nid go get letter n give mrs teo to indicate tat im allergic to sodium hydroxide then every practical ill get a glove~.~ lol sian la now my whole hand gt the smell of hydrochloric acid.. used to neutralize the sodium hydroxide abit nice sia~.~ watever.. sian-.-