This study reports experimental results from the analysis of 108 SBR samples by low-field ¹H and ¹³C NMR spectroscopy at 1?T in combination with partial least square regression to develop methodology for quality control of raw rubber. The partial least square regression (PLS-R) models were developed for quantifying the individual monomer units present in the SBR which are impossible to quantify because of peak overlap in the SBR ¹H NMR spectrum obtained at 1?T. The spectra revealed differences between samples from the same and different manufacturing batches of same and different manufacturers from different countries in a qualitative and quantitative fashion.