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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