Available through VWR, but may be cheaper elsewhere. They work much better than I expected. ZEROSTAT ANTISTATIC GUN VWR cat #100496-120 Vendor cat #60610 Each $122.64 list Donna Harclerode, HTL, QIHC, SLS (ASCP) Associate Scientist Celgene 9393 Towne Center Road San Diego, CA 92121