Assay (anhydrous basis):≥ 90%Absorbance Ratios:A250/A260: 0.92 to 1.00 A280/A260: 0.65 to 0.69pH:3.5-5.5Solubility: Easily soluble in water; practically insoluble in ethanol or ether.Loss on Drying:≤ 15%Storage and Stability:Lyophilized powder may be stored at -20°C. Stable for 6 months after receipt at -20°C. Reconstitute with sterile ddH2O. Aliquot to avoid repeated freezing and thawing. Store at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the capImportant Note: This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological. Toxicity and Hazards: All products should be handled by qualified personnel only, trained in laboratory procedures.
