Not official USP-NF text
GRAPE SEEDS OLIGOMERIC PROANTHOCYANIDINS
PF LGS# Brand Type of Test Additional Information
33(6) L21 PLgel Content of . . . . . . . . Content of oligomeric proanthocyanidins. 7.5 mm x 30 cm, 5 µm.
33(6) L1 Supelcosil LC-18 Limit of . . . . . . . . . Limit of cathein and epicatechin. 4.6 mm x 25 cm, 5 µm.