I'm really worry, I made a wort some hours ago, and right now I see that my hydrometer is broken in the bottom, the last time I used it was in the hot wort previous to boiling, and it seems like some little green balls are missing.

Until I know, the green balls could be lead or mercury, so if these balls are into my wort this could be really a danger to my health. Should I drop my beer in order to avoid be poisoned by unknown metals?

EDIT I just read that green balls are OK, http://www.homebrewtalk.com/f11/broken-hydrometer-blues-66368/index2.html Anyone can confirm this?