that might eventually evolve from the oil over long-term storage or during intense heating. For a more comprehensive liquid-phase analysis, ASTM D7621 is often used in conjunction.
For manufacturers and buyers, adhering to this standard is non-negotiable for several reasons: astm d5705 pdf
For those looking for the full technical details, you can find the official ASTM D5705-20 standard directly on the ASTM International website methods like IP 570? that might eventually evolve from the oil over