MTT (Methylthiazolyldiphenyl-tetrazolium bromide)

sigma cat. no. M2128

I am going to reconstitute MTT with Phosphate buffered solution at 5 mg/mL.

Can I store the reconstituted solution in -20C freezer?

The product information sheet said that once reconstituted, store in -0C freezer, and can be stored at least 6 months.