Vitrinite Reflectance (VR) is the most commonly used organic maturation indicator used in the petroleum industry. This is mainly because it is accurate, quick, non-destructive and inexpensive. On the other hand, because vitrinite is not strongly prone to oil and gas formation is common as a residue in source rocks. Measurment of vitrinite reflectance in PGGRC done with Zeiss Axioplan 2 microscope. The Zeiss Axioplan 2 is a high-end imaging platform for complex research. It is optimized for light transmission and extremely high contrast fluorescence imaging. This complete system comes fully configured for ideal performance, range and functionality.