Appearance White Crystal or CrystalerIdentification Meet requirementsPurity (on dry basis) = 95%Related Steviol Glycosides = 3.0%Loss on Drying (105°C 4hr) = 6.0%Residue on Ignition (sulfate) = 1.0%4.5 ~ 7.0Arsenic = 1ppmLead = 1ppmStevia is a natural is a sweetener and sugar substitute extracted from the leaves of the plant species Stevia rebaudiana. The active compounds of stevia are steviol glycosides, which have up to 150 times the sweetness of sugar, are heat-stable, stable, and not fermentable.