Total nitrogen (N-TOT)

Nitrogen is included in many different substances and the amount is measured as Total Nitrogen. The main inorganic forms of nitrogen commonly found are ammonia, ammonium, nitrate and nitrite. Organic forms include amines, proteins and urea. Nitrogen is an essential nutrition, which can be used directly by plants. Nitrogen gas makes up about 80% of the atmosphere and is fairly non-reactive. Read more