VWR PTFE Tissue Grinders Plain Plungers. To prevent contamination all surfaces are lubricated and pass through a neoprene bushing to eliminate any sample cross contamination. To ensure a smooth functioning operation the Cowie PTFE Tube Grinders have a PTFE lined rust-resistant wiper blade. The Cowie Tissue Grinder has an ultra-smooth PTFE plunger ensures the user only removes the tissue and not the surrounding bone muscle or fat. The plunger ensures there is minimal force applied to the tissue. For grinding small amounts of tissue such as when staining the Cowie PTFE Tissue Grinders have a plain PTFE plunger. This Cowie Grinding Accessory has a standard clearance of 0.150mm between plunger and glass. Specifications for VWR PTFE Tissue Grinders 11.21 Plain Plungers : Volume mL: 10 Height mm: 270 Diameter mm: (Please note that the description and stock photo may not correspond to the specific model listed above) We offer only genuine Cowie products authorized for sale in the U.S. and other markets so you can be sure that you are buying authentic Laboratory Apparatus with a full manufacturer's warranty in addition to our own 100percent Satisfaction Guarantee. We are your premier online distributor for VWR Laboratory Apparatus. We are an authorized supplier to all federal and state government agencies as well as to research and educational institutions and can facilitate volume orders on many types of laboratory equipment lab consumables and other products to help fulfill your specific needs. We offer Free Shipping and FREE USPS shipping to APO and FPO addresses on all orders in our store over 49. Please refer to our APO/FPO Shipping and Export Restrictions for more information on export to APO/FPO addresses. In addition to the VWR PTFE Tissue Grinders Plain Plungers 11.21/ 89026-394 we carry a full complement of Laboratory Apparatus as well as other product offerings from Cowie. We also carry a full line of VWR accessories to help meet your laboratory and scientific needs. For a complete selection of VWR Laboratory Apparatus please visit our Cowie page. For more brand name Laboratory Apparatus please visit our Laboratory Apparatus store section. To see our complete line of lab medical industrial and scientific products please see our science and lab equipment online catalog. VWR PTFE Tissue Grinders 11.21 Plain Plungers