Patent ID: 7557578

Claim:
An NMR sample holder assembly for use with an RF saddle coil of an NMR probe, said saddle coil defining an RF magnetic axis, said sample holder assembly adapted to accept at least a pair of cylindrical NMR sample tubes each of the sample tubes of diameter D, the sample holder comprising: an axially symmetric body and a first planar end surface transverse to an axis of said body, said body comprising a bore of diameter greater than 2D, said bore coaxial with the body axis, said NMR sample holder assembly adapted to engage with said NMR probe in selected relative azimuthal orientation therebetween; a top alignment plate comprising at least a pair of apertures and said top alignment plate disposed in a recess in said top planar end surface, said pair of apertures displaced by a selected spatial interval, said spatial interval defining a first transverse axis, said first transverse axis azimuthally aligned at a selected angle to the RF magnetic axis of said RF saddle coil; and a bottom alignment plate comprising at least a pair of apertures and said bottom alignment plate disposed in a recess in a bottom planar surface parallel with said first planar end surface, said pair of apertures displaced by said selected spatial interval, said spatial interval defining a bottom transverse axis, said first transverse axis and said bottom transverse axis being in mutual alignment; said apertures for accepting and supporting at least a pair of cylindrical sample tubes, each said tube comprising an axis of symmetry and said symmetry axes in precise mutual alignment.