I bought an ESR meter kit from an Aussie company (Dick something??
electronics) and it worked like a charm (has digital readout too). The
company is out of business now but I believe the guy that invented and
designed the kit still makes them available.

First time I used it I went through a container of electrolytics and it
wasn't long before the bad ones were sorted. It can be used in-circuit too.
I'll see if I can dig out the info and send it to you.

Keeter P