... A, SteviolbiosideAppearance: White or off-white crystalline granule or powderSpecification: ST-1 Rebaudioside A 80%, 95%, 97%, 99% HPLC JECFA ... % / Steviol Glycosides 90%, 95% HPLC JECFA ST-3 Stevioside 85%, 90%, 95% HPLC JECFA ST-4 Steviol Glycosides 85%, 90%, 95% HPLC ... and acid stomach as an auxiliary method. Stevia Leaf p.e. (Organic Stevia leaf)