Produced and qualified by Indoor Biotechnologies.Source Light roasted peanut flour (Runner cultivar)Formulation Preservative-free and carrier-free in phosphate buffered saline pH 7.4. Sterile filteredConcentration See product insertPurification From delipidated peanut extract by multi-step chromatography. Purity on silver stained SDS-PAGE 95%Notes(1) Ara h 2 appears as a doublet.(2) Trace level of Ara h 1 is 0.05%.(3) Avoid repeated Freeze/Thaw cycles. It is recommended to aliquot the product upon first thaw and freeze in working aliquot volumes.(4) Endotoxin content is 5.0 EU/mug.