Lyophilized powder. Insulin is not soluble at neutral pH. It can be solubilized (1 - 10 mg/mL) in dilute acetic acid or dilute hydrochloric acid, pH 2-3.
保存建议
Store at 4 degree C until reconstitution. Following reconstitution aliquot and freeze at -20 degree C for long term storage. Avoid repeated freeze-thaw cycles.