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The following calculations are used in this test:
Moisture Content Test Method A
As-received Moisture Content (%) = 100 * (A - B) / A
Oven-dried Moisture Content (%) = 100 * (A - B) / B
where,
A = Mass of as-received specimen
B = Mass of oven-dried specimen
and
A = Mw - Mp
B = Md - Mp
where,
Mw = Mass of as-received specimen and pan
Md = Mass of oven-dried specimen and pan
Mp = Mass of pan
Moisture Content Test Method B
As-received Moisture Content (%) = 2 * (50 - C)
Oven-dried Moisture Content (%) = 100 * (50 - C) / C
and
C = Mo - Mt
where,
Mo = Mass of oven-dried soil and tare
Mt = Mass of tare
Ash Content
AC = 100 * (Ma - Md) / (Mds - Md)
where,
AC = Ash content
Ma = Mass of ash and dish
Mds = Mass of dry soil and dish
Md = Mass of dish
Organic Matter
Organic Content (%) = 100 - AC