Name	Description
ADF (Acid detergent fiber)	Acid detergent fibre is an estimates of the content in cellulose, lignin, cutine and insoluble minerals in the cell wall and it is determined as the residue remaining after the digestion of the sample with an acid detergent solution.
ADL (Acid detergent lignin)	Fiber that are insoluble either in neutral detergents or in acid detergent are measured, and the residue after treatment of the ADF fraction with 12 mol/L sulfuric acid is considered to be acid detergent lignin.
Biomethane potential (BMP)
Bulk density	The mass or weight per unit volume.
Chemical Oxygen Demand (COD)	Chemical Oxygen Demand (COD) is a measure of the amount of oxygen required to chemically oxidize organic and inorganic substances in water or wastewater. It is an important water quality parameter that indicates the level of pollution in a water body, particularly from organic compounds and other oxygen-demanding materials. COD is typically expressed in milligrams of oxygen per liter (mg/L) and is used to assess the overall potential of a sample to deplete dissolved oxygen in aquatic environments, which can affect aquatic life. It is determined by oxidizing the organic matter in the sample using a strong chemical oxidant, often potassium dichromate, in an acidic solution under heat. The higher the COD value, the greater the concentration of pollutants present.
Electrical Conductivity	Reflects the level of salinity in a compost product, which suggests the possibility of phytotoxic or phyto-inhibitory effects.
NDF (Neutral detergent fiber)	NDF measures structural components in plant cell (i.e lignin, hemicellulose and cellulose), but not pectin,.
Particle Size	A particle's size is measured by measuring its diameter, usually by sedimentation or sieving.
pH	pH is a measure of how acidic or basic a substance is, ranging from 0 to 14. A pH below 7 indicates acidity, a pH of 7 is neutral, and a pH above 7 indicates alkalinity.
Porosity	The fraction of the total soil volume that is taken up by the pore space.