Sample fraction consisting of bed sediment
material.

Sample fraction containing dissolved constituents in
solution.

Sample fraction representing freely available
material.

Sample fraction that cannot pass through a filter, typically
suspended or particulate matter.

Sample fraction that does not settle out of suspension under
normal conditions.

Sample fraction that can be recovered or extracted from the
sample.

Sample fraction consisting of suspended solids or particulates in
the sample.

Complete sample fraction including all constituents without
separation.

Total residual fraction remaining after processing or
treatment.

Sample fraction in vapor or gaseous phase.