Japanese crossword «Chemical laboratory»

Even with the title I haven't been able to work out the image.

Something boiling on a Bunson burner, I think. Not as clear as it could be.

Almost

i thought it was a duck singing lol :) i can see the right answer now, though, after reading the title.

a nice one!

The puzzle is interesting but I can't see the picture! I did not imagine a duck singing but it could be... :)

this was a tricky one for me