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Before presenting the various moisture measurements, it is important to define moisture content. Moisture content is normally expressed as a percentage by weight of either total product (wet basis) or dry product (dry basis). Wet Basis Moisture Content: M = 100 x (Wet Weight – Dry Weight) / Wet Weight
Dry Basis Moisture Content: M = 100 x (Wet Weight – Dry Weight) / Dry Weight From the above equations, wet basis moisture content cannot exceed 100%. Dry basis moisture may exceed 100% and is a non-linear function. Moisture content may be determined by numerous techniques. These may be divided into two major categories, primary and secondary measurement. |
