Big Difference between Low Noise Test Lead and Standard?

[bdwgarrison]

I'm wondering if there is a big difference between a Low Noise Test Lead (Agilent 16117b model goes for $800) and a normal test lead? How much worse of a reading can I expect to get on a High Resistance Meter?

Thanks.

[plesa]

This cable has graphite coated insulation to prevent charge generation under shield during cable movement.
Also it can use material to reduce electrochemical effect and EMF.

It depends on your measurement, my experience that for low noise measurement you need complete shielding and these cables with banana plug are difficult to use.
Much better is to use 1:1 cables and some feedthrough.

Materials use for insulation are PTFE and PE (material with high isulation resistance, low humidity sensitivity)