For initial quantificat ion: • the Aliquots  may be analyzed immediately after aliquoting; or  • the Aliquots  shall be stored at approximately 4 °C if analyzed within 24h (within a maximum of five (5) days from Sample  collection); or  • the Aliquots  shall be frozen ( -20°C ) if the analysi s will be conducted more than 24h after aliquoting.