Formaldehyde in Alcoholic Beverages: Large Chemical …
2.2. Rapid Screening Using Purpald Reagent. A total of 508 samples of alcoholic beverages (beer, wine, spirits, and unrecorded alcohol; see [39, 40] for details on unrecorded alcohol) were analyzed using the purpald method according to the specifications of the test kit.Briefly, 5 mL of the sample were pipetted into a test tube, and five drops of the alkalinization reagent were added to raise ...
