API MPMS 10.1-2007 pdf download.Manual of Petroleum Measurement Standards Chapter 10—Sediment and Water Section 1—Standard Test Method for Sediment in Crude Oils and Fuel Oils by the Extraction Method.
1. Scope* 1.1 This test method covers the determination of sediment in crude oils and fuel oils by extraction with toluene. The precision applies to a range of sediment levels from 0.01 to 0.40 % mass, although higher levels may be determined. N OTE 1—Precision on recycled oils and crank case oils is unknown and additional testing is required to determine that precision. 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appro- priate safety and health practices and determine the applica- bility of regulatory limitations prior to use. For specific warning statements, see 18.104.22.168 and 6.1. 2. Referenced Documents 2.1 ASTM Standards: 2 D 4057 Practice for Manual Sampling of Petroleum and Petroleum Products D 4177 Practice for Automatic Sampling of Petroleum and Petroleum Products D 5854 Practice for Mixing and Handling of Liquid Samples of Petroleum and Petroleum Products E 29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications 2.2 API Standards: 3 Chapter 8.1 Manual Sampling of Petroleum and Petroleum Products (ASTM Practice D 4057) Chapter 8.2 Automatic Sampling of Petroleum and Petro- leum Products (ASTM Practice D 4177) Chapter 8.3 Mixing and Handling of Liquid Samples of Petroleum and Petroleum Products (ASTM Practice D 5854) 2.3 ISO Standard: 4 5272 Toluene for industrial use—Specifications 3. Summary of Test Method 3.1 Extract test portion of a representative oil sample, contained in a refractory thimble, with hot toluene until the residue reaches constant mass. The mass of residue, calculated as a percentage, is reported as sediment by extraction. 4. Significance and Use 4.1 A knowledge of the sediment content of crude oils and fuel oils is important both to the operation of refining and the buying or selling of these commodities. 5. Apparatus 5.1 Usual laboratory apparatus and glassware, together with the following are required for this test method. 5.1.1 Extraction Apparatus—Use the apparatus illustrated in Figs. 1 and 2 and consisting of the elements described in 22.214.171.124-126.96.36.199. 188.8.131.52 Extraction Flask—Use a wide-neck (Erlenmeyer) flask of 1-L capacity, with a minimum external neck diameter of 50 mm, for the procedure.
184.108.40.206 Condenser—A condenser in the form of a metal coil approximately 25 mm in diameter and 50 mm in length attached to, and with the ends projecting through, a lid of sufficient diameter to cover the neck of the flask as shown in Fig. 1. The coil shall be made from stainless steel, tin, tin-plated copper, or tin-plated brass tubing having an outside diameter of 5 to 8 mm and a wall thickness of 1.5 mm. If constructed of tin-plated copper or brass, the tin coating shall have a minimum thickness of 0.075 mm. The exposed surface of the coil for cooling purposes is about 115 cm 2 . N OTE 2—The use of a water flowmeter/controller unit that monitors water flow to the condenser that shuts off the heat source when the flow rate drops below a pre-set limit has been found suitable to prevent vaporized toluene from igniting. The use of such a device is recom- mended. 220.127.116.11 Extraction Thimble 5 —The extraction thimble shall be ofa refractory porous material, pore size 20.0 to 30.0 μm (as certified by the manufacturer), 25 mm in diameter by 70 mm in height, weighing not less than 15 g and not more than 17 g. Suspend the thimble from the condenser coil by means of a basket so that it hangs approximately midway between the surface of the extracting solvent and the bottom of the condenser coil.