FAQ: How many freeze/thaw cycles can RNase Inhibitor, Murine (Glycerol-free) tolerate? 

RNase Inhibitor, Murine (Glycerol-free) was tested up to 10 freeze/thaws at 40,000 U/ml and showed no activity loss. However, repeated freezing and thawing of this product should be avoided. The enzyme may be stored at 4°C for up to one week.