Soluble in water (0.1-1 mg/ml). Then dilute with water or any desired aqueous buffer.
Storage:
Store in dry form at -20°C. For best results, rehydrate just before use. After rehydration, keep solution at +4°C for up to 1 week or at -20°C for longer-term storage. Aliquot before freezing to avoid repeated freeze-thaw cycles.