European Pharmacopoeia standard colorimetric solution

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The European Pharmacopoeia standard colorimetric solution color inspection colorimetric methods are specifically divided into brown (B), brownish yellow (BY), yellow (Y), yellow green (GY), and red (R)

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European Pharmacopoeia standard colorimetric solution

The colorimetric method in the European Pharmacopoeia is specifically divided into brown (B), brownish yellow (BY), yellow (Y), yellow green (GY), and red (R) 2ml/tube, 10ml/tube

　　European Pharmacopoeia standard colorimetric solutionBrown has 9 color codes (B1-B9)

Brown yellow is (BY1-BY7)

Yellow (Y1-Y7)

Yellow green (GY1-GY7)

Red (R1-R7)

2ml/tube, 10ml/tube

According to the Chinese Pharmacopoeia, "colorless" refers to the color of the test solution being the same as the solvent used, while "almost colorless" refers to the corresponding color tone No.1 standard colorimetric solution diluted with water at a dilution of 1 times. According to the European Pharmacopoeia, a solution of the test sample that is consistent with water or the solvent used, or lighter than the reference solution B9, can be determined to be colorless; There are subtle differences between the two, and attention should be paid to their similarities and differences during the evaluation.

　　European Pharmacopoeia standard colorimetric solution

The color inspection method in the European Pharmacopoeia is specifically divided into brown (B), brownish yellow (BY), yellow (Y), yellow green (GY), and red (R) 10ml/tube

Brown has 9 color codes (B1-B9)

Brown yellow is (BY1-BY7)

Yellow (Y1-Y7)

Yellow green (GY1-GY7)

Red (R1-R7)

All are 10ml/tube