Storage and Rehydration: Store freeze-dried solid at -20°C. Weigh out desired amount and dissolve in desired buffer. Centrifuge if not clear. Prepare working dilution on day of use.
Extended Storage after Rehydration: Store under sterile conditions at 2-8°C, or aliquot and freeze at -20°C or below.
Expiration date: one year from date of rehydration. The expiration date may be extended if test results are acceptable for the intended use.