Product Specifications Influenza B virus: Product Code: AGIN75-2Source: Allantoic fluid of 10 days old embryonated eggs, inoculated with influenza B virus, strain B/Tokio/53/99.Purification: Ultracentrifugation with 10 - 40 % sucrose gradient.Formulation: STE, 0.1 % sodium azide (NaN3) and 0.005 % thimerosal.Inactivation: Thimerosal and beta propiolactone treatment. This product has been treated in a manner consistent with methods of inactivation. Generally accepted good laboratory practices appropriate to microbiological/viral safe handling practices and techniques are required at work.Analysis: Purity > 90