Picrate process for determining quaternary ammonium content of microbial polysaccharides

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  机译： 具有季铵化合物含量的木材防腐剂，使用指定的木材防腐剂处理消耗品的过程，用于木材防腐剂的浓缩物和季铵化合物

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  机译： 包含季铵化合物和多糖的固体组合物及其制备方法和用途

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