42 U.S.C. § 2093: Domestic distribution of source material

for the conduct of research and development activities of the types specified in section 2051 of this title ; for use in the conduct of research and development activities or in medical therapy under a license issued pursuant to section 2134 of this title ; for use under a license issued pursuant to section 2133 of this title ; or for any other use approved by the Commission as an aid to science or industry. the physical characteristics of the source material to be distributed; the quantities of source material to be distributed; and the intended use of the source material to be distributed. The Commission may make a reasonable charge determined pursuant to section 2201(m) of this title for the source material licensed and distributed under subsection (a)(1), (a)(2), or (a)(4) and shall make a reasonable charge determined pursuant to section 2201(m) of this title , for the source material licensed and distributed under subsection (a)(3). The Commission shall establish criteria in writing for the determination of whether a charge will be made for the source material licensed and distributed under subsection (a)(1), (a)(2), or (a)(4), considering, among other things, whether the licensee is a nonprofit or eleemosynary institution and the purposes for which the source material will be used.