1.8.2.1	-20°C, in presence of 20% glycerol stable for several days, without glycerol most of the activity is lost after 48 h	
1.8.2.1	-20°C, MES, phosphate, Tris or CAPS buffer, pH 5.5-10.5, for at least 3 months	
1.8.2.1	-20°C, no loss of activity after several months	
1.8.2.1	-20°C, retains high activity for more than 6 months	
1.8.2.1	-20°C, stable for several months	
1.8.2.1	4°C, 10-20% loss of activity after 6 h at room temperature, 80% loss of activity after 5 days	
1.8.2.1	4°C, 20% loss of activity after 1 month