The ISSX Membership Fund was created in 1990. The fund is made up entirely from voluntary contributions of ISSX members and its purpose is to support membership for individuals who would otherwise not be able to pay dues. In general, those supported by the fund are scientists from countries that do not have convertible currencies or where dues relative to income renders dues payment prohibitively expensive.
The Membership Fund has been publicized at various times through the ISSX Newsletter and by word of mouth. During the first few years of the fund's operation, applicants were selected so as to provide the broadest geographical representation and to avoid having more than a few members from the same institution.
When dues renewal notices are sent to members, they are sent as well to members supported by the Membership Fund. A message is attached requesting that the form be returned with a note, if funding is to be requested for the following year. The philosophy of the fund has been that members, once covered, would be allowed to continue membership as long as they request continuation and finances permit.
Over the years of the fund's operation, letters have been sent to members receiving fund support, encouraging them to participate in Society activities and specifically suggesting contributions to the newsletter.