ASTM D1796 for water and sediment in fuel oils by the Centrifuge method
ASTM D1796 standard test method for water and sediment in fuel oils by the centrifuge method (Laboratory Procedure)
1. Scope
1.1 This test method covers the laboratory test for determination of water and sediment in fuel oils by using the centrifuge method in the range from 0 to 30 % volume. This chapter, along with API MPMS Chapter 10.3 (Test Method D4007, IP 359), supersedes the previous edition of Test Method D1796 (API Standard D2548, IP 75).

NOTE 1 - With some types of fuel oils such as residual fuel oils or distillate fuel oils containing residual components, it is difficult to obtain water or sediment contents with this test method. When this situation is encountered, Method D95 (API MPMS Chapter 10.5) or Test Method D473 (API MPMS Chapter 10.1) may be used.

1.2 Annex A2 contains a procedure for saturating toluene with water.

1.3 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.

1.4 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 appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For a specific precautionary statement see 6.1.

2. Referenced Documents
2.1 ASTM Standards:
D95 Test Method for Water in Petroleum Products and Bituminous Materials by Distillation (API MPMS Chapter 10.5)
D362 Specification for Industrial Grade Toluene
D473 Test Method for Sediment in Crude Oils and Fuel Oils by the Extraction Method (API MPMS Chapter 10.1)
D4006 Test Method for Water in Crude Oil by Distillation (API MPMS Chapter 10.2)
D4007 Test Method for Water and Sediment in Crude Oil by the Centrifuge Method (Laboratory Procedure) (API MPMS Chapter 10.3)
D4057 Practice for Manual Sampling of Petroleum and Petroleum Products (API MPMS Chapter 8.1)
D4177 Practice for Automatic Sampling of Petroleum and Petroleum Products (API MPMS Chapter 8.2)
D4377 Test Method for Water in Crude Oils by Potentiometric Karl Fischer Titration (API MPMS Chapter 10.7)
D4928 Test Method for Water in Crude Oils by Coulometric Karl Fischer Titration (API MPMS Chapter 10.9)
D5854 Practice for Mixing and Handling of Liquid Samples of Petroleum and Petroleum Products (API MPMS Chapter 8.3)
E 542 Practice for Calibration of Laboratory Volumetric Apparatus

2.2 API Standards:
MPMS Chapter 8.1 Manual Sampling of Petroleum and Petroleum Products (ASTM Practice D4057)
MPMS Chapter 8.2 Automatic Sampling of Petroleum and Petroleum Products (ASTM Practice D4177)
MPMS Chapter 8.3 Mixing and Handling Liquid Samples of Petroleum and Petroleum Products (ASTM Practice D5854)
MPMS Chapter 10.1 Determination of Sediment in Crude Oil by the Extraction Method (ASTM Test Method D473)
MPMS Chapter 10.2 Determination of Water in Crude Oil by the Distillation Method (ASTM Test Method D4006)
MPMS Chapter 10.3 Determination of Water and Sediment in Crude Oils by the Centrifuge Method (Laboratory Procedure) (ASTM Test Method D4007)
MPMS Chapter 10.5 Determination of Water in Petroleum Products and Other Bituminous Materials (ASTM Test Method D95)
MPMS Chapter 10.7 Determination of Water in Crude Oils (Karl Fischer) Titration (ASTM Test Method D4377)
MPMS Chapter 10.9 Determination of Water in Crude Oils Coulometric Karl Fischer Titration (ASTM Test Method D4928)

2.3 IP Standard:
Specification for Toluol