Liquid Sample Cuvette Holder for use with BAC100 or BAC102 Lab Grade Raman Probe (shaft diameter of 9.5mm) or with immersion shaft (probes not included); and with any standard 12.5mm x 12.5mm (OD) (1cm path length) size cuvette for liquid or powder sampling. Measures Raman spectrum of liquids and powders by connecting a Raman probe directly to the holder. With a signal up to 3 times clearer than standard cuvette holders, due to internal mirror with a three point precision locking mechanism for unmatched reproducibility. Also features a stop to prevent the probe shaft from hitting the cuvette and an excitation light trap to reduce background fluorescence.