Moshe, You might check out Dale Safety Analyzers. They have a variety of models. Contact Dale Technology Corp. PO Box 196, Thornwood, NY 10594 phone 800-544-3253.
An additional factor to consider is the "body model" circuit used in the leakage tester. Different load circuits are specified by IEC 601-1 and AAMI ES-1. The old UL 544 was different from both. All give similar results for current sources at frequencies below 100 kHz. The UL load gave significantly different response for voltage sources. (Most real-life leakage sources can be considered high-impedance current sources.) ---------- >I'm looking for a leakage tester which can measure the low currents >of the medical standards (e.g. 601)

