I also don't float test. On my hatches, if I candle and don't see any movement, I find the air cell and I pip it. If they are alive, they chirp. If they are dead, they don't.Thanks for all the comments on my sebrights. I hatched them, and tried to handle them, but they never got friendly! Even after I got rid of all but 1 rooster. The girls were all B%&#es! The rooster hated my red feed scoop. Had to fight him every time I went into the pen. He wasn't as big as my boot, but he was quick and could fly! Lol
So I got rid of them all.they were lovely to look at though. And someone said loud! The girls were very chatty and had their own little language.
Float test - don't bother. It can confirm it's alive, but it can't confirm its dead. Just candle it and look for draw down, movement or veins. By this point, it should be obvious if it's dead.