permissible leakage current values for capacitors?

[maxhifi]

I am going to build a test jig for measuring capacitor leakage current. Basically just a variable power supply which supplies up to 600V. It will supply voltage to the capacitor under test, and the capacitor will be in series with the 50uA scale of my Simpson 260. The 260 will be bypassed by an spst switch, which will be opened once the capacitor is charged then allowing the leakage current value to be read.

What I can't find are pass/fail values of leakage current for coupling and filter capacitors. I want to be able to test old bathtub and paper in oil capacitors, and also to be able to test NOS paper in oil Russian capacitors before use.

Something like, "if leakage is less than 10uA at 600V, the capacitor is good" is what I am looking for. Higher current scales will be used for electrolytic capacitors.