Today During my work one of activity is to remake a alkali etching which we use for our testing for etching capability of the copper foil we produce.One of the ingredient is the ammonium solution.During my remake i use my goggles for my eye protection but i forgot/neglect to use my gas mask for my respiratory protection.To make the story short i accidentally inhale the gas vapor of the ammonium solution.WTF....!!! Until now its hertz my nose......
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