One thing worth noting: 1000x lower resistance isn't necessarily better, especially given that it's not uncommon to have a battery in modern gear.

The mat isn't supposed to ground everything, it's supposed to bleed off static charges. It's also why wrist straps or something to ground you are good, but should have several mega ohms of resistance -- you don't want to touch something that has some voltage on it and complete a low-impedance circuit to ground.

Just FWIW.

73 -- Lynn

On 4/6/2014 1:10 PM, Sam Morgan wrote:
Here are the results:

Radio Shack P/N 276-2370 ($22.99) - 26 G ohms (26,000 M ohms)
Jameco P/N 10584 ($16.45) - 44 G ohms (44,000 M ohms)
Digi-Key P/N 16-1121-ND, (Desco 66164) ($38.18) - 41 M ohms

The Desco mat's resistance is about 1000x lower than the cheaper ones!

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