soil aggregate fractionation

[chlebas]

Is it possible to add measurement of soil aggregate fractionation ?
This measurement leads to four soil fractions of different sizes: large macroaggregate (LM; > 2mm), small macroaggregate (SM; 2- 0.25 mm), microaggregate (m; 0.25-0.053 mm) and silt plus clay (S+C< 0.053 mm). The method is a physical fractionation (using sieves). Units from each fraction should be expressed in percentages.
Also, from those fractions we can obtain an aggregate stability index: MWD whose unit should be mm.
Thank you

[ktoddbrown]

Just a quick note that different groups use different cutoffs here. There are also different sieving methods that can affect the measurement. This may be a more complicated schema, I know that https://soilradiocarbon.org/ spent quite some time trying to get something generalizable pulled together, I don't know they are quite happy with it yet.