The Certified PTFE Reference Solid (p/n 100-27-01) is Texolon (r) Brand High Performance Virgin PTFE 8764. This product ships with a detailed calibration report which includes manufacturer's lot and billet numbers, the results of (10) different ASTM test for mechanical and electrical properties, and the results of a series of water contact angle measurements using pure deionized water. This reference tool may be used with any ramé-hart contact angle goniometer (including legacy systems).