RePo-1 Portable Refracto Polarimeter is an analytical instrument utilized in biochemistry and chemistry for the determination of the purity and concentration of a sample solution, and also for determining the optical rotation of chiral molecules. The polarimeter measures the rotation of plane-polarized light as it passes through the sample while the refractometer is utilized for measuring the refractive index of the sample, related to its purity and concentration. RePo-1 Portable Refracto Polarimeter has use in the food and beverage industry to determine sugar content, pharmaceutical industry for measuring drug purity, and chemical industry to measure the purity and concentration of different solutions.