《Table 11 Precision test》

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《Extraction Process and Content Determination of Total Flavonoids in Ginkgo( Ginkgo biloba L. ) Leaves》

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Six parts of the same quercetin reference solution（1.00 ml）were accurately weighed，filled in 10 ml volumetric flasks，and added with methanol to constant weight，followed by shaking uniformly.The absorbance values were measured at the maximum absorption wavelength of 259.5 nm，RSD=0.12%，indicating that the precision was good.The results are shown in Table 11.