The process of collecting oil via an oil sampling port is critical. Without a true sample, oil analysis reports may be inaccurate. Access to the lubricant is done through the use of a sample port adapter. The sample port adapter screws into the sample port of most Air Sentry adapter kits. Oil samples can then be drawn from the system and placed into a clean sampling bottle for analysis, ensuring that the lubricant is never exposed to contamination by opening the equipment.