1.2.1.54 5.7 8.6 highest stability, 0°C, 24 h, 25% loss of activity 288292 1.2.1.54 9 - 0°C, 24 h, 63% loss of activity 288292 1.2.1.54 10 - 0°C, 24 h, 96% loss of activity 288292