Sampling systems are critical equipment designed to collect representative samples from the main fluid stream—whether gas, liquid, or multiphase—within pipelines. The purpose of sampling is to enable precise laboratory analysis of the chemical composition, physical properties, and overall quality of the fluid. A proper and standard sampling process must ensure that the collected sample accurately reflects the composition of the entire flowing stream. This is especially crucial in custody transfer operations, where fluid quality parameters—such as water content or impurities—directly affect pricing and commercial value. Sampling systems are generally categorized into manual and automatic types. Automatic systems, through precise programming, perform sampling at predetermined intervals or in proportion to the flow rate, thereby eliminating human error. These systems are designed in compliance with international standards such as ISO 3171 and API 8.2, ensuring reliability and consistency. By providing accurate and representative samples, sampling systems play a key role in quality control, process optimization, and adherence to environmental standards.