Lab drawing program

I'm not able to find a good program for drawing chem lab setups. I'm looking for diagrams with bunsen burners, test tubes and all the other glaswares. I"ve looked at OpenOffice dia qcad xfig + a couple more. But none of these include libraries with objects for a chemical lab. Can't this be found ? Note, it's not a program like xdrawchem that can draw molecules.