- silage, fermenter substrate, digestate, starch water, manure, slurry, brewer's yeast

According to the Ordinance on the protection of agricultural land from pollution:

Manure is solid manure, slurry, and manure as organic manure in processed form.

Solid manure is a mixture of litter, solid and liquid animal excrements of varying degrees of biodegradation, stability and maturity.

Slurry is liquid manure, most often a mixture of liquid animal excrement and wastewater (usually formed as a liquid residue of excrement that litter manages to absorb).

Parameters of substrate testing of biogas plants that we conduct:

• pH
• Dry matter
• Chemical Oxygen Consumption
• Anionic detergents
• Ammonia
• Sulfates
• Chlorides
• Organic carbon or organic matter
• Nitrogen, total
• Phosphorus, total
• Potassium, total
• Ember remains
• Acid ratio (butyric: lactic: acetic)
• Ashes
• Microelements: Na, Ca, Mg, Cu, Mn, Fe, Mo, Zn, Co
• Heavy metal: As, Cd, Ni, Pb, Cr, Mo, Co, Hg