This test method is a validated analytical procedure for the simultaneous determination of metals in various feed matrices. This method uses Inductively Coupled Plasma Mass Spectrometry (ICP-MS) to provide sensitive, accurate, and reliable quantification. This test method quantifies aluminum, arsenic, boron, cadmium, chromium, cobalt, copper, lead, molybdenum, nickel, selenium, and vanadium.
This test method is a classical ninhydrin colorimetric method used to determine free amino nitrogen (FAN) in malt, wort, and beer. FAN is an essential nutrient for yeast during fermentation, and its measurement is critical for assessing the fermentability and nutritional quality of brewing materials.
This test method is a titrimetric method used to determine the free fatty acid (FFA) content in animal feed. Oil is extracted from the feed sample prior to a titration to determine the free fatty acid content. It is a key quality control measure, as elevated FFA levels can indicate hydrolytic rancidity, degradation, or poor… Continue reading Free Fatty Acids [Feed]
This test method uses static headspace gas chromatography with flame ionization detection (GC–FID) to measure fusel alcohols—higher-chain alcohols produced during fermentation. The measurement of fusel alcohols is important for quality control, regulatory compliance, and detecting potential adulteration or off-spec fermentation. This test method identifies isopropanol, N-propanol, isobutanol, isoamyl alcohol, and N-amyl alcohol.
This test method is a gas chromatography (GC-FID)-based procedure for the quantitative determination of cis-, trans-, saturated, monounsaturated, and polyunsaturated fatty acids in vegetable oils and non-ruminant animal fats. This method enables detailed fatty acid profiling critical for nutritional labeling, product formulation, and quality control.
This test method is a gravimetric method used to determine the crude fiber content in oilseed byproducts, such as soybean meal, cottonseed meal, canola meal, and other plant-based feed materials. Crude fiber represents the indigestible portion of the sample that remains after chemical digestion, primarily composed of cellulose and lignin, but excluding more soluble fiber… Continue reading Crude Fiber [Oilseed Byproducts]
This test method is a combustion method for determining crude protein in soybean meal, using high‑temperature combustion in pure oxygen to release nitrogen that is then measured and converted to protein. It is also the officially designated crude‑protein method used for NOPA referee testing.
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 an enzymatic spectrophotometric method that quantifies D‑mannose by converting sugars through sequential enzyme reactions. It provides a specific, sensitive determination of mannose in plant products and polysaccharide hydrolysates.