The fiber analyzer is suitable for analyzing the content of Crude Fiber CF, acid/alkali detergent fiber (ADF), neutral detergent fiber (NDF), acid detergent lignin (ADL), cellulose and hemicellulose in raw materials. raw materials and finished products of food, grain and feed. Under the function of dilute sulfuric acid, the sugar, starch, pectic substances and hemicellulose in the sample are removed through hydrolysis, then proteins and fatty acids are removed through alkali treatment. The mineral is then removed through a high-temperature calcination process, and what remains is the raw fiber.