There have been continual efforts over the years to improve the quality of experimental Raman data, with particular attention being given to improved sources, detectors, and better resolution and rejection of stray light by the utilized monochromators. However, little attention has been given to the design of the sampling cells utilized for the recording of the Raman spectra of liquids.
Kreškimir Furić and J. R. Durig, "Spherical Raman Cell," Appl. Spectrosc. 42, 175-177 (1988)