Abschlämmbare[s] n suspended solids
abschlämmen clarify [by filter press]/to {sugar);
decant/to, deslime/to, elutriate/to, levigate/to;
remove mud/to, clear out the mud/to; distil/to {met)

Abschlämmen n clarification, decanting,
desliming, elutriation, levigation

Abschlämmgefäß n elutriation tank, levigation tank

Abschlämmgerät n elutriating apparatus, elutriator

Abschlämmung f clarification, clearance of mud,
desliming; deposit {secondary cells]
abschleifen abrade/to, abrase/to, grind off

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Note added at 18 mins (2008-03-03 09:15:04 GMT)
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"elutriable fines" according to
http://www.testing.de/testing-katalog/boden.pdf
with another 40 ghits to back it up

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Note added at 22 mins (2008-03-03 09:18:36 GMT)
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"Absetzgerät nach Haas (o. Abb.)
Zur Bestimmung der abschlämmbaren
Bestandteile
=
Sedimentation apparatus acc. to Haas
For determination of elutriable fines"
according to the above link