TAPPI T 419 om-18描述了未改性淀粉和淀粉的定性和定量测定 仅通过常规氧化技术或酶转化进行改性的淀粉，用于添加打浆剂或 表面尺寸。本程序测量总淀粉含量，不区分淀粉内部和内部 纸的表面。一些阳离子淀粉、取代淀粉、接枝淀粉或与树脂结合的淀粉不在本标准范围内 这是一个程序，因为它们需要特殊的技术。通过检查淀粉的可提取性来确定淀粉是否适合本程序。如果能定量提取并形成碘络合物，则应能通过该方法进行测定。 该方法仅适用于完全漂白纸浆的纸张，因为木质素和木质素残留物 也可以与碘反应形成颜色复合物。

TAPPI T 419 om-18 describes the qualitative and the quantitative determination of unmodified starches and starches modified only by conventional oxidation techniques or enzyme conversion, which are used for beater addition or surface sizing.This procedure measures the total starch content and does not differentiate between starch inside and on the surfaces of the paper.Some starches that are cationic, substituted, grafted, or combined with resins are not within the scope of this procedure, because special techniques are required for them. Test to determine whether the starch is appropriate for this procedure by checking for extractability. If it can be extracted quantitatively and forms the iodine complex, it should be able to be determined by this method.This method is applicable only for papers with fully bleached pulp, because lignin and lignin remnants can also react with iodine to form a color complex.