Hello, I have a Tissue Tek II tissue embedding center. Is there anybody know how to clean up the paraffin inside. I think maybe the paraffin inside get contaminated. Thanks in advance, Best, Karen -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.385 / Virus Database: 268.3.5/300 - Release Date: 4/3/2006