On Sat, 11 Jul 2015 02:52:21 -0700, Phil Allison wrote:

Be aware that the ESR meters intended for service work are only good for
electrolytic caps ( regular aluminium and tantalum ) and interpreting
the readings correctly requires significant operator knowledge and/or a
similar electro to compare with.

....Or a table of expected values vs. voltage rating vs. capacitance -
which comes with the Peak meter.