3ml per vial. Sold in multiples of 5. IFU available in English,French,German Spanish only.Sold in multiples of 5CE marked for use as an IVD Within the UK, EU member states and EEA countries. In all other territories this product can be used for research purposes onlyThis reagent is compatible with the Result Reporting Software (RRS) application, use link for more detailshttps://www.nibsc.org/products/rrs.aspx