3.2.2.6	37	-	5 min, 20% loss of activity	
3.2.2.6	38	-	half-life: about 1 day	
3.2.2.6	50	-	5 min, complete inactivation	
3.2.2.6	60	-	rapid loss of activity above	
3.2.2.6	100	-	60% loss of activity after 30 min, 80% loss of activity after 1 h