I need to use Ambion Turbo DNA-free on some total RNA preps I have stored elsewhere but I want to assess whether the defrosted DNase and accessory buffers are still useable as it was a new unopened kit.
Does anyone have a protocol for assessing DNase 1 activity, preferably using electrophoretic methods as access to the Bioanalyzer is currently limited.
There is a simple solution for you. We used it when we had similar problem.
You need PCR product. It is not important their size or anything.
Incubate PCR product with your DNAase kit in proper condition. You can try to add your enzyme in different concentration.
When the incubation time end, load your samle on the gel.
If you don't see any band on the gel that's mean your kit is still working.