Features Specifications:Sell Group A+ C Meningococcal Polysaccharide Vaccine  The method of ultra-centrifugation to eliminate bacterial endotoxin, the Pharmacopoeia of the Peoples Republic of China (2005) Volume prescribed, the bacterial endotoxin of Group A Meningococcal Polysaccharide Vaccine must be under 100EU/ug. With under 50EU/ug bacterial endotoxin of the product, the quality is improved obviously.