abstract |
An object of the present invention is to provide a method for purifying a chemical solution, which can obtain a chemical solution having excellent defect suppressing performance. In addition, the provision of chemicals is also an issue. The method for purifying a drug solution of the present invention is a method for purifying a drug solution by purifying a product to be purified containing an organic solvent to obtain a drug solution, and the content of a stabilizer in the product to be purified is the product to be purified. It is 0.1 mass ppm or more and less than 100 mass ppm with respect to the total mass. |