How to Compare Anti Static Mats to Conductive ESD Floor Mats
Before you buy "esd mats" or "static dissipative mats" you should know how anti static mats and conductive floor matting are used in static control. Both types of mats are used with grounding to capture and drain static from the top of work surfaces and floors preventing the release of static as electrostatic discharges (ESD).
Anti Static Mats are typically constructed of rubber, but sometimes vinyl. If they are made of rubber they are typically constructed with two layers laminated together known as "2 ply". If they are made of vinyl they are typically constructed with three layers laminated together known as "3 ply".
An anti static mat drains static off of its top surface at an "Anti Static Rate"( between 106 and 1011 ohms square) across the top surface of the mat.
Anti Static mats are designed to move charges they collect on their top surface at rates that do not allow the mat's surface to hold those charges. However, they must be connected to an electrical ground that is connected to Earth to accomplish this.
Placing the mat on insulating materials like a wooden desk or wood floors cuts off the path static would take under the force of gravity to fall to the Earth. This will cause the mat to hold charge. So if you intend to set the mat on an insulating material, the mat must be tied by wires or cables to an electrical commons such as a common point ground that has a connection to the Earth in order for the mat to be considered "grounded".
Material Standards. Manufactured to ANSI / ESD S20.20-2014, and MIL-PRF-RoHS standards. Available in Blue, Dark Blue, Gray, or Green.
Electrical Properties. 5300 Series Anti Static Mags dissipate static electricity on their outer surface at an anti-static rate (less than 1011 Ohms Square per ESD S11.11) preventing the mat from holding static and causing electrostatic discharges (ESD).
Uses. Can be used to drain static off of surface mounts or floors where workers are standing, walking, or soldering.
Black carbon-based conductive mats are used on floors where static needs to be drained from the people or vehicles moving over it as quickly as possible.
An anti static mat drains static off of its top surface at an "Anti Static Rate"( between 101 and 105 ohms square) across the top surface of the mat.
These mats can be connected to ground via grounding cables if they are sitting on top of an insulating material, but if they are sitting on top of an anti static or conductive surface they generally would not connected to an electrical commons by grounding cables.
Work Conditions. These mats have been tested per ANSI / ESD S20.20 according to Test Method ASTM D575. They compress .415 inches when tested at 35 PSI. Their standing surface is diamond-plated to prevent tripping, and beveled at the edges.
Grounding. 5700 Series Anti-Fatigue ESD Floor Mats are constructed with a conductive vinyl Nitricell sponge base. If sitting on an insulated surface ground the mat securely by attaching a common point ground cord to the 10mm snap installed at the corner.