How to measure large resistances (up to 10s of Giga Ohm) using a normal Multimeter

In this video I will show you how to measure large resistances using a normal Multi-meter and a bench power supply.
In a second video I will make a tiny electronics circuitry so that using same setup we can measure up to 10s of Tera Ohm and also how to measure polarization and depolarization current.
It was for more than half a year that due to very busy life and work I could not upload any UA-cam video. Gradually the period of overload is moving away and hopefully I will upload videos regularly.
Finance: N=78
subs=5362
Available budget (N):5362-100-78*(78+1)=-900
Storage limit: 2^ln(5362)=384,56

[@Vidduley]

Great video! I think one could improve the accuracy of this method by measuring the value of power supply voltage beforehand using a multimeter. At least that's what I do - I don't really trust those built-in meters :)

[@HVE]

Thanks, I wanted to mention it in the video but forgot. The power supply I used, shows the current and voltage values rather accurately, otherwise we indeed must use a second multi meter to measure the voltage.