Static Light Scattering of Polystyrene Reference Materials: Round-RobinTest

Abstract This paper reports a round-robin test dealing with static light scattering (LS) measurements of three polystyrene standard materials with narrow distributions. Low-angle laser light scattering (LALLS) and multi-angle laser light scattering (MALLS) instruments, as well as other types of goniometers, were used. The results of the two samples with higher molar masses are in good agreement if one and the same Rayleigh ratio value was used for calibrating multi-angle instruments, and refractive indices, and refractive index increments were adjusted. The values of LS measurements for the oligomeric sample exhibited greater deviations in this test.