2-10. Laboratory Operating Procedures.
a. Operation of Laboratory Test Equipment. Operate test equipment, as applicable, in accordance with their
respective technical manuals as listed in Appendix A.
b. Physical Property Laboratory Operating Procedures. The following is a list of tests that will be performed by the
operator on every sample. Refer to TM 38-301-1 through TM 38-301-4, Joint Oil Analysis Program (JOAP) for operating
requirements and procedures. Refer to Table 2-13 to determine significance of tests and to Table 2-14 for Oil Sample
(1) Viscosity of Used Lubricating Fluids.
(2) Crackle Test for Water Contamination.
(3) Blotter-Spot Test.
(4) Microscopic Analysis for Insoluble Debris.
(5) Setaflash for Determination of Fuels in Used Lubrication Fluids.
Table 2-13. Lubricant Contaminants
Crackle test; blotter
spot; spectro for NA, B,
Crackle test; blotter spot;
oil, impairs lubrication
spectro for NA with Marine
Lowers oil viscosity
Causes abrasive wear
Spectro for SI, AL; blotter
Viscosity, blotter spot
Viscosity, blotter spot for