SH6531 Petroleum Sediment Detector Dual‑unit Tester for Crude Fuel Oil Sediment ASTM D473 Standard: GB/T 6531 ASTM D473 ASTM D473 Petroleum Product Oil Sediment Tester ASTM D473 Sediment Content Testing Equipment Residual Fuel Oils Total Sediment Tester The standard:ASTM D473 SH6531 Petroleum Sediment tester is according to the People's Republic of China standard GB/T 6531 "Method for Determination of Sediments in Crude Oil and Fuel Oil" (Extraction Method) and ASTM D473, and