The pestle tips of the new SELECT Ultra Tissue Grinders have been vitrified using a proprietary silica casting process. The result is a glass-like abrasive surface which provides a more aggressive grinding action to enable efficient processing of difficult and fibrous samples. SELECT Ultra Tissue Grinders incorporate the same patented closed system as our standard grinders. Available in 15ml and 50ml sizes, they are supplied gamma sterilised in an easy-to-open Tyvek® package with an extra cap for storage and transport, plus a patient identification label for traceability. Supplied in packs of 10.