1.1.1.346	-70°C, 2 mg/ml enzyme in 20 mM Tris-HC1 (pH 7.5), 6 months, the enzyme remains stable	
1.1.1.346	4°C, enzyme solution at pH 6.5-7.5, at least 2 months, the enzyme remains stable	
1.1.1.346	4°C, potassium buffer, several weeks, no loss of activity