1. Product indicators Test items Testing standard Baicalin baicalin / (g / 100g) above 85% Extraction site root Character inspection appearance Light yellow powder Smell special Taste special Physical properties Moisture (%) no above 2.0 Ash content (%) no above 3.0 PH value 5.0~7.0 heavy metal Lead (calculated by Pb) / (mg / kg) no above 10.0ppm Arsenic (as) / (mg / kg) no above 2.0ppm Mercury (in Hg) / (mg / kg) no above 1.0ppm Cadmium (calculated by CD) / (mg / kg) no above 5.0ppm Microbiological detection Total bacteria / (CFU / g) no above 100 Mold and yeast / (CFU / g) no above 20 Pseudomonas aeruginosa / (CFU / g) Do not detect Staphylococcus aureus / (CFU / g) Do not detect Heat resistant coliform / (CFU / g) Do not detect 2. Package specification 1.0kg /Aluminum foil bag ; 15kg / cardboard barrel; 25kg / cardboard barrel 3. Storage method Avoid freezing environment, store in a dark, cool and dry place, room temperature and sealed.