Membership in Sigma Xi is by nomination and is conferred in one of two ways. Full Membership is conferred upon any individual who has shown noteworthy achievement as an original investigator in a field of pure or applied science or engineering. Associate Membership is available to any individual who has, through initial research achievement in a field of pure or applied science, shown an aptitude for research. Please see the Qualifications for Membership for more information. Students and non-students follow the same review process.

Individuals who were previously elected as an Associate Member and who now meet the requirements for Full Membership can apply for Promotion to Full Membership.

Individuals may request nomination to membership through a Sigma Xi chapter or through the Sigma Xi Committee on Qualifications and Membership. All nominations sent to the Committee will be re-routed through the appropriate chapter whenever possible. This will connect new members to local chapters from the start of their membership. It not only encourages the members' involvement in local Sigma Xi activities but also helps strengthen the local chapters. Please consult the University of Houston Chapter of SIGMA XI to request nomination.

Please fill out either this Word or PDF nomination form and present it to any officer listed in the chapter website.

If you have questions on membership, please contact Dr. Fusheng Li, President of Sigma Xi University of Houston Chapter, Tel. 832-626-7909, E-mail: fli9@uh.edu