该方法描述了定量测定纸和纸板中松香的经验程序。 总可萃取树脂包括作为施胶剂添加的松香、来自纸浆的天然树脂、作为施胶剂和消泡剂添加的脂肪酸和酯，以及其他天然和合成树脂。 在存在挥发性或非挥发性中性抽提物的情况下，旨在测定松香的定量程序将包括醇抽提物中存在的任何脂肪酸作为松香。 定性试验，表明是否添加松香作为施胶剂，见第12节； 定性测试。 由于萃取过程中存在部分酯化反应，该方法不适用于纸张中脂肪酸和脂肪盐的定量测定。 本方法不适用于树脂湿强度的测定。 已发现三聚氰胺甲醛树脂不会干扰松香的测定（1）。

This method describes empirical procedures for the quantitative determination of rosin in paper and paperboard. Total extractable resin includes rosin added as a sizing agent, natural resins from the pulp, fatty acids and esters added as sizing and defoaming agents, and other natural and synthetic resins. The quantitative procedures aimed at determining rosin in the presence of volatile or non-volatile neutral extractives will include as rosin any fatty acid present in the alcohol extract. Qualitative tests, indicating the presence or absence of rosin added as a sizing agent, will be found in Section 12; Qualitative tests. This method is not suitable for the quantitative determination of fatty acids and fatty salts in paper due to partial esterification during extraction. This method is not applicable to the determination of wet strength resins. It has been found that melamine formaldehyde resin does not interfere with the rosin determination (1).