Date of this Version
Soil Survey Investigations Report No. 42 Version 5.0
The standard methods described in Soil Survey Investigations Report (SSIR) No. 42, “Kellogg Soil Survey Laboratory Methods Manual,” are those used by the Kellogg Soil Survey Laboratory (KSSL), National Soil Survey Center (NSSC). Included in SSIR No. 42 are descriptions of both current and obsolete methods, all of which are documented by method codes and linked with analytical results that are stored in the National Cooperative Soil Survey (NCSS) Soil Characterization Database. This linkage between laboratory method codes and the respective analytical results is reported on the KSSL data sheets.