This test method is an official method for determining nitrogen and/or crude protein content in animal feed and feed ingredients using the combustion method (also known as the Dumas method). It is a rapid alternative to the traditional Kjeldahl method, relying on high-temperature combustion to convert nitrogen compounds into measurable nitrogen gas.
This test method is a classical Kjeldahl-based method for determining crude protein content in animal feed and feed ingredients. It is based on the quantification of total nitrogen in a sample, which is then converted to protein using a standard factor. This method is widely accepted and used in regulatory, quality control, and research settings.
This test method is a gravimetric and titrimetric procedure used to quantify the calcium carbonate (CaCO₃) content in samples such as limestone, feed supplements, and pharmaceuticals. The method measures the amount of carbonate by reacting the sample with acid and quantifying the calcium present, providing an estimate of the CaCO₃ concentration.