Will the 2x QIAGEN Multiplex PCR Master Mix freeze at -20°C?

Yes, the Multiplex PCR Master Mix will freeze at -20°C. Freeze-thaw cycles up to 10 times will not negatively influence the performance of the kit. The 2x QIAGEN Multiplex PCR Master Mix can also be stored at 2-8°C for up to 6 months.