Is anyone out there using the "slurry" system for recycling commercially prepared 10% NBF? And if so, how do you know your getting 10% again? Thanks, ~Kim Tournear ~ HT (ASCP), QIHC (ASCP) Histology Supervisor Tucson Medical Center Tucson, AZ ~Don't let your life end before it begins~ OU Rocks!!!! (that would be Oklahoma....)