EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of ISO 21437 testing. This method describes the determination of carbohydrate composition in wood pulp samples. This method makes it possible to determine the concentrations of individual anhydrous monosaccharides up to 1 mg/g of oven dry dough.
The most widely used methods are based on acid hydrolysis of polysaccharides using sulfuric acid followed by chromatographic determination of monosaccharides.
The pulp samples are hydrolyzed with sulfuric acid using a two-step technique. Quantities of the different monosaccharides are determined using ion chromatography (IC) or gas chromatography (GC) in the presence of an internal standard to confirm the results. If GC is used, the hydrolyzed sample is reduced and acetylated, and the alditol acetates of the resulting monosaccharides are then separated and determined by GC.
The ISO 21437 method involves the extraction of carbohydrates from dough using a combination of chemical and enzymatic processes. The extracted carbohydrates are then analyzed by high performance liquid chromatography (HPLC) to determine their relative proportions.
The standard provides detailed procedures for sample preparation, extraction, and analysis, as well as guidelines for calculating carbohydrate composition based on HPLC data. The method is intended for use by pulp manufacturers, paper manufacturers and other organizations involved in pulp production and use.
In general, ISO 21437 provides a standardized method for determining the carbohydrate composition in pulps that can help ensure consistency and quality in pulp production and papermaking processes.
EUROLAB assists manufacturers with ISO 21437 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.
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