Storage and Rehydration: Store freeze-dried solid at 2-8°C. Rehydrate with the indicated volume of dH2O (see product specification sheet) and centrifuge if not clear. Prepare working dilution on day of use. Product is stable for about 6 weeks at 2-8°C as an undiluted liquid.
Extended Storage after Rehydration: Aliquot and freeze undiluted product at -20°C or below. Avoid repeated freezing and thawing.
Expiration date: one year from date of rehydration. The expiration date may be extended if test results are acceptable for the intended use.