RPI offers the highest purity D-Luciferin Sodium Salt for a wide range of bioluminescent applications. Allows highly sensitive bioluminescent measurements. Ideal for reporter gene assays, ATP assays, whole animal studied, DNA sequencing and more. Our product is specially purified and tested extensively to ensure the highest signal and reproducibility with low background and sensitivity. Guaranteed purity is determined by both standard HPLC and Chiral HPLC methods. Protect from light and moisture.