Store vial at 4 C prior to restoration. Restore with 10 ml of deionized water (or equivalent). For extended storage aliquot contents and freeze at -20 C or below. Avoid cycles of freezing and thawing. Centrifuge product if not completely clear after standing at room temperature. This product is stable for several weeks at 4 C as an undiluted liquid. Dilute only prior to immediate use. Expiration date is one (1) year from date of restoration.