I want know about purification method for peroxide content in Tetrahydrofurane.
I have already use 3A & 4A molecular sieve.

The molecular sieve will only remove water. For small amounts of THF, use the 3A sieve, add to the effluent THF 10g/liter of a mild reducing agent such as ferrous sulfate or cuprous sulfate, distill the mixture IN THE DARK under nitrogen or argon, discard the 1st 10% of the distillate, save the next 80%, store it in the dark under nitrogen or argon, use it immediately. If you want to store it longer, add a fewNaOh pellets to the container.