Good afternoon,

I have stored P2 and N3 buffers in ice for about one hour. The P2 buffer turned milky and I discarded it. The N3 buffer didn't seem to have any chemical changes, so I am wondering whether it is fine to use it for DNA Miniprep? (Both must be kept at room temperature; the N3 buffer ingredients are: 4.2 M Gu-HCl, 0.9 M potassium acetate, pH 4.8 ). Thanks!