Funny thing, I've been reading all these e-mails about humidity chambers and lo and behold I just received an advertisement flyer for them in my box.  Newcomer's Supply has humidity chambers that hold 10 slides.  They have 2 different kinds.  A clear one so you can see the water level or a black one so that you can see the tissue on the slide.  The charge on the flyer says they're $30 each.  The phone number for this company is (800)383-7799 or check out www.newcomersupply.com .

Renee Escalona, BS, HTL(ASCP)
Laboratory Supervisor
TX Vet. Med. Diag. Lab
College Station, TX