1.1.99.30	-15°C, loss of 10% activity within 1-2 years	
1.1.99.30	-16°C, N2-atmosphere, wet packed cells, 450 days, more than 90% remaining activity	
1.1.99.30	30°C, 170 h, completely stable	
1.1.99.30	room temperature, freeze dried cells, 200 days, more than 80% remaining activity	
1.1.99.30	room temperature, freeze dried cells, loss of 10% of activity within 1-2 years