... -21-9 ItemsRequirementColorLight yellow powderAssay (HPLC)Total triterpenes ≥10%, 20%, 30%, 40%, 70%Loss on drying ≤3%Sulphated ash<1.0%Heavy ... heat.Shelf Life: 24 months. Gotu Kola Extract 10%, 20%, 30%, 40%, 70% Total triterpenes; Centella Asiatica Extract