What symbol is this?

What symbol is this?

What does it mean when you see this lab safety symbol?

What does this lab safety symbol represent?

What does it mean when you see this lab safety symbol?

What does it mean when you see this safety symbol?

You should not have an open flame when you see this symbol.

What does it mean when you see this lab safety symbol?

Which safety symbol should she have paid attention to before starting the lab?

What does this symbol mean 

What symbol is represented above?

What symbol is represented above?

What symbol is represented by the symbol above?

What symbol is represented above?

What does the lab safety symbol with a flame over a line indicate?

Which lab safety symbol warns you about the presence of toxic substances?

What should you do when you see a lab safety symbol with a test tube pouring liquid on a hand and a surface?

Which symbol indicates that you should wear eye protection in the lab?

What does the lab safety symbol with a tree and a dead fish represent?

Which lab safety symbol indicates the need for ventilation?

What does the lab safety symbol with a circle and a flame inside it mean?

Which symbol indicates that a substance is under pressure?

What does the lab safety symbol with an exclamation mark signify?