When you handle chemicals you should:
Stand up to work , so that if you spill something it does not spill onto you.
Wear safety glasses , so nothing gets into your eyes.
Take the top off the bottle and place it upside down on the work surface , so that it does not get acid onto the surface or dirt into the acid.
Replace the bottle top as soon as you finish using the bottle . This prevents spills and replacing the wrong top on the wrong bottle