ANSI S20.20-2007 Approved February 11, 2007 ESD Association

What was expected in 2007: Personnel Grounding Requirement

Personnel Grounding
Technical Requirement
Product Qualification1Compliance Verification
Test MethodRequired Limit(s)Test MethodRequired Limit(s)
Wrist Strap System2ANSI/ESD S1.1 (Section 5.11)< 3.5 x 10E7ESD TR53 Wrist Strap Section< 3.5 x 10E7 ohms
Flooring/Footwear System –
Method 1
ANSI/ESD STM97.1< 3.5 x 10E7 ohmsESD TR53 Flooring Section< 3.5 x 10E7 ohms
ESD TR53 Footwear Section< 3.5 x 10E7 ohms
Flooring/Footwear System –
Method 2 (both required)
ANSI/ESD STM97.1< 10E9 ohmsESD TR53 Flooring Section< 1.0 x 10E9 ohms
ANSI/ESD STM97.2< 100 voltsESD TR53 Footwear Section< 1.0 x 10E9 ohms

Personnel
Grounding
Technical
Requirement
Product Qualification1Compliance Verification
Test
Method
Required
Limit(s)
Test
Method
Required
Limit(s)
Wrist Strap
System2
ANSI/ESD S1.1
(Section 5.11)
< 3.5 x 10E7
ohms
ESD TR53
Wrist Strap
Section
< 3.5 x 10E7
ohms
Flooring/
Footwear
System –
Method 1
ANSI/ESD
STM97.1
< 3.5 x 10E7
ohms
ESD TR53
Flooring
Section
< 3.5 x 10E7
ohms
ESD TR53
Footwear
Section
< 3.5 x 10E7
ohms
Flooring/
Footwear
System –
Method 2
(both required)
ANSI/ESD
STM97.1
< 10E9 ohmsESD TR53
Flooring
Section
< 1.0 x 10E9
ohms
ANSI/ESD
STM97.2
< 100 voltsESD TR53
Footwear
Section
< 1.0 x 10E9
ohms

Personnel
Grounding
Technical
Requirement
Product Qualification1Compliance Verification
Test
Method
Required
Limit(s)
Test
Method
Required
Limit(s)
Wrist Strap
System2
ANSI/ESD S1.1
(Section 5.11)
< 3.5 x 10E7
ohms
ESD TR53 Wrist
Strap Section
< 3.5 x 10E7
ohms
Flooring/
Footwear
System –
Method 1
ANSI/ESD
STM97.1
< 3.5 x 10E7
ohms
ESD TR53
Flooring Section
< 3.5 x 10E7
ohms
ESD TR53
Footwear
Section
< 3.5 x 10E7
ohms
Flooring/
Footwear
System –
Method 2
(both required)
ANSI/ESD
STM97.1
< 10E9 ohmsESD TR53
Flooring
Section
< 1.0 x 10E9
ohms
ANSI/ESD
STM97.2
< 100 voltsESD TR53
Footwear
Section
< 1.0 x 10E9
ohms

  1. Product qualification is normally conducted during the initial selection of ESD control products and materials. Any of the following methods can be used: product specification review, independent laboratory evaluation, or internal laboratory evaluation.
  2. For situations where an ESD garment is used as part of the wrist strap grounding path, the total system resistance including the person, garment and grounding cord shall be less than 3.5 x 10E7 ohms.

AmeriWorx Conductive Vinyl Tile Meets These Requirements

What was expected in 2007: EPA ESD Control Items

Technical RequirementESD Control ItemProduct Qualification1Compliance Verification
Test MethodRequired Limit(s)2Test MethodRequired Limit(s)
EPAWorksurfaceANSI/ESD S4.1
and/or
ANSI/ESD STM4.2
< 1 x 10E9 ohms
and/or
< 200 volts
ESD TR53
Worksurface
Section
< 1 x 10E9 ohms
resistance
to ground
Wrist Strap CordANSI/ESD S1.10.8 x 10E6 to
1.2 x 10E6 ohms
For compliance verification
of a wrist strap system, see
Personnel Grounding
Requirement Table
Wrist Strap CuffANSI/ESD S1.1Interior
> 1 x 10E5 ohms
Exterior
> 1 x 10E7 ohms
Wrist Strap Cord
Bending Life
ANSI/ESD S1.1> 16,000 cycles
FootwearANSI/ESD STM9.1< 1 x 10E9 ohmsSee Personnel Grounding
Requirement Table
Foot GroundersESD SP9.2< 1 x 10E9 ohms
FlooringANSI/ESD S7.1< 1 x 10E9 ohms
SeatingANSI/ESD STM12.1< 1 x 10E9 ohmsESD TR53
Seating Section
< 1 x 10E9 ohms
resistance to ground
Ionization other than
Room Systems
ANSI/ESD STM3.1
– Discharge time
– Offset voltage
User defined
< ± 50 volts
ESD TR533
– Discharge time
– Offset voltage
User defined
< ± 50 volts
Ionization
(Room Systems)
ANSI/ESD STM3.1
– Discharge time
– Offset voltage
User defined
< ± 150 volts
ESD TR53
– Discharge time
– Offset voltage
User defined
< ± 150 volts
ShelvingANSI/ESD S4.1< 1 x 10E9 ohmsESD TR53
Worksurface Section
< 1 x 10E9 ohms
resistance to ground
Mobile Equipment
(Working Surfaces)
ANSI/ESD S4.1< 1 x 10E9 ohmsESD TR53 Mobile
Equipment Section
< 1 x 10E9 ohms
resistance to ground
Continuous MonitorsUser definedUser definedESD TR53
Continuous
Monitors Section
Manufacturer defined
GarmentsStatic-Control Garment
(ANSI/ESD STM2.1)
< 1 x 10E11 ohmsESD TR53
Garments Section
< 1 x 10E11 ohms
Groundable
Static-Control
Garment
(ANSI/ESD STM2.1)
< 1 x 10E9 ohmsESD TR53
Garments Section
< 1 x 10E9 ohms
Groundable
Static-Control
Garment System
(ANSI/ESD STM2.1)
< 3.5 x 10E7 ohmsESD TR53
Garments Section
< 3.5 x 10E7 ohms

Technical
Requirement
ESD Control
Item
Product Qualification1Compliance Verification
Test
Method
Required
Limit(s)2
Test
Method
Required
Limit(s)
EPAWorksurfaceANSI/ESD S4.1
and/or
ANSI/ESD STM4.2
< 1 x 10E9 ohms
and/or
< 200 volts
ESD TR53
Worksurface
Section
< 1 x 10E9 ohms
resistance
to ground
Wrist Strap
Cord
ANSI/ESD S1.10.8 x 10E6 to
1.2 x 10E6 ohms
For compliance verification
of a wrist strap system, see
Personnel Grounding
Requirement Table
Wrist Strap
Cuff
ANSI/ESD S1.1Interior
> 1 x 10E5 ohms
Exterior
> 1 x 10E7 ohms
Wrist Strap
Cord Bending
Life
ANSI/ESD S1.1> 16,000 cycles
FootwearANSI/ESD STM9.1< 1 x 10E9 ohmsSee Personnel Grounding
Requirement Table
Foot GroundersESD SP9.2< 1 x 10E9 ohms
FlooringANSI/ESD S7.1< 1 x 10E9 ohms
SeatingANSI/ESD STM12.1< 1 x 10E9 ohmsESD TR53
Seating Section
< 1 x 10E9 ohms
resistance
to ground
Ionization
other than
Room Systems
ANSI/ESD STM3.1
-Discharge time
-Offset voltage
User defined
< ± 50 volts
ESD TR533
-Discharge time
-Offset voltage
User defined
< ± 50 volts
Ionization
(Room Systems)
ANSI/ESD STM3.1
-Discharge time
-Offset voltage
User defined
< ± 150 volts
ESD TR53
-Discharge time
-Offset voltage
User defined
< ± 150 volts
ShelvingANSI/ESD S4.1< 1 x 10E9 ohmsESD TR53
Worksurface
Section
< 1 x 10E9 ohms
resistance
to ground
Mobile
Equipment
(Working
Surfaces)
ANSI/ESD S4.1< 1 x 10E9 ohmsESD TR53
Mobile
Equipment
Section
< 1 x 10E9 ohms
resistance
to ground
Continuous
Monitors
User definedUser definedESD TR53
Continuous
Monitors
Section
Manufacturer
defined
GarmentsStatic-Control
Garment
(ANSI/ESD STM2.1)
< 1 x 10E11
ohms
ESD TR53
Garments
Section
< 1 x 10E11
ohms
Groundable
Static-Control
Garment
(ANSI/ESD STM2.1)
< 1 x 10E9 ohmsESD TR53
Garments
Section
< 1 x 10E9 ohms
Groundable
Static-Control
Garment System
(ANSI/ESD STM2.1)
< 3.5 x 10E7
ohms
ESD TR53
Garments
Section
< 3.5 x 10E7
ohms

Technical
Requirement
ESD Control
Item
Product Qualification1Compliance Verification
Test
Method
Required
Limit(s)2
Test
Method
Required
Limit(s)
EPAWorksurfaceANSI/ESD S4.1
and/or
ANSI/ESD
STM4.2
< 1 x 10E9 ohms
and/or
< 200 volts
ESD TR53
Worksurface
Section
< 1 x 10E9 ohms
resistance
to ground
Wrist Strap
Cord
ANSI/ESD S1.10.8 x 10E6 to
1.2 x 10E6 ohms
For compliance verification
of a wrist strap system, see
Personnel Grounding
Requirement Table
Wrist Strap CuffANSI/ESD S1.1Interior
> 1 x 10E5 ohms
Exterior
> 1 x 10E7 ohms
Wrist Strap
Cord Bending
Life
ANSI/ESD S1.1> 16,000 cycles
FootwearANSI/ESD
STM9.1
< 1 x 10E9 ohmsSee Personnel Grounding
Requirement Table
Foot GroundersESD SP9.2< 1 x 10E9 ohms
FlooringANSI/ESD S7.1< 1 x 10E9 ohms
SeatingANSI/ESD
STM12.1
< 1 x 10E9 ohmsESD TR53
Seating Section
< 1 x 10E9 ohms
resistance
to ground
Ionization
other than
Room Systems
ANSI/ESD
STM3.1
– Discharge time
– Offset voltage
User defined
< ± 50 volts
ESD TR533
– Discharge time
– Offset voltage
User defined
< ± 50 volts
Ionization
(Room Systems)
ANSI/ESD STM3.1
– Discharge time
– Offset voltage
User defined
< ± 150 volts
ESD TR53
– Discharge time
– Offset voltage
User defined
< ± 150 volts
ShelvingANSI/ESD S4.1< 1 x 10E9 ohmsESD TR53
Worksurface
Section
< 1 x 10E9 ohms
resistance
to ground
Mobile
Equipment
(Working
Surfaces)
ANSI/ESD S4.1< 1 x 10E9 ohmsESD TR53
Mobile
Equipment
Section
< 1 x 10E9 ohms
resistance
to ground
Continuous
Monitors
User definedUser definedESD TR53
Continuous
Monitors
Section
Manufacturer
defined
GarmentsStatic-Control
Garment
(ANSI/ESD
STM2.1)
< 1 x 10E11
ohms
ESD TR53
Garments
Section
< 1 x 10E11
ohms
Groundable
Static-Control
Garment
(ANSI/ESD
STM2.1)
< 1 x 10E9
ohms
ESD TR53
Garments
Section
< 1 x 10E9
ohms
Groundable
Static-Control
Garment System
(ANSI/ESD
STM2.1)
< 3.5 x 10E7
ohms
ESD TR53
Garments
Section
< 3.5 x 10E7
ohms

  1. Product qualification is normally conducted during the initial selection of ESD control products and materials. Any of the following methods can be used: product specification review, independent laboratory evaluation, or internal laboratory evaluation.
  2. For standards that have multiple resistance test methods, these limits apply to all methods.
  3. For additional information on periodic testing of Ionizers, see ANSI/ESD SP3.3. 
A completed installation of AmeriWorx conductive (ESD) vinyl tile flooring in an electronics manufacturing facility
A completed installation of AmeriWorx conductive (ESD) vinyl tile flooring in an electronics manufacturing facility

AmeriWorx Conductive Vinyl Tile Meets These Requirements

ANSI S20.20-2014 Approved July 31, 2014 ESD Association

What was expected in 2014: Personnel Grounding Requirement

Personnel Grounding
Technical Requirement
Product Qualification4Compliance Verification
Test MethodRequired Limit(s)Test MethodRequired Limit(s)
Wrist Strap SystemANSI/ESD S1.1
(Section 6.11)
< 3.5 x 10E7 ohmsESD TR53
Wrist Strap Section
< 3.5 x 10E7 ohms
Flooring/Footwear System5
(Both limits must be met)
ANSI/ESD STM97.1< 1.0 x 10E9 ohmsESD TR53
Flooring Section
< 1.0 x 10E9 ohms(6)
ANSI/ESD STM97.2< 100 volts peakESD TR53
Footwear Section
< 1.0 x 10E9 ohms(6)

Personnel
Grounding
Technical
Requirement
Product Qualification4Compliance Verification
Test
Method
Required
Limit(s)
Test
Method
Required
Limit(s)
Wrist Strap
System
ANSI/ESD S1.1
(Section 6.11)
< 3.5 x 10E7
ohms
ESD TR53
Wrist Strap
Section
< 3.5 x 10E7
ohms
Flooring/
Footwear
System5
(Both limits
must be met)
ANSI/ESD
STM97.1
< 1.0 x 10E9
ohms
ESD TR53
Flooring
Section
< 1.0 x 10E9
ohms(6)
ANSI/ESD
STM97.2
< 100 volts peakESD TR53
Footwear
Section
< 1.0 x 10E9
ohms(6)

Personnel
Grounding
Technical
Requirement
Product Qualification4Compliance Verification
Test
Method
Required
Limit(s)
Test
Method
Required
Limit(s)
Wrist Strap
System
ANSI/ESD S1.1
(Section 6.11)
< 3.5 x 10E7
ohms
ESD TR53
Wrist Strap
Section
< 3.5 x 10E7
ohms
Flooring/
Footwear
System5
(Both limits
must be met)
ANSI/ESD
STM97.1
< 1.0 x 10E9
ohms
ESD TR53
Flooring
Section
< 1.0 x 10E9
ohms(6)
ANSI/ESD
STM97.2
< 100 volts
peak
ESD TR53
Footwear
Section
< 1.0 x 10E9
ohms(6)

  1. Product qualification is normally conducted during the initial selection of ESD control products and materials. Any of the following methods can be used: product specification review, independent laboratory evaluation or internal laboratory evaluation.
  2. For ESD control footwear/flooring systems that were installed before the adoption of this standard, ongoing compliance verification records can be used as evidence of product qualification.
  3. The required limit of < 1.0 x 10E9 ohms is the “maximum” allowed value. The user should document the resistance values that were measured for product qualification for the footwear and the floor to comply with the < 100 volts body voltage generation and use these resistances for compliance verification.

AmeriWorx Conductive Vinyl Tile Meets These Requirements

What was expected in 2014: ESD Control Items

Technical RequirementESD Control ItemProduct Qualification7Compliance Verification
Test MethodRequired Limit(s)8Test MethodRequired Limit(s)
EPAWorksurface(9,10)
Qualification can
be done by either
Test Method)
ANSI/ESD S4.1
and/or
ANSI/ESD STM4.2
Point to Point
< 1 x 10E9 ohms
ESD TR53
Worksurface
Section
Point to Ground
< 1 x 10E9 ohms
Point to
Groundable Point
< 1 x 10E9 ohms
< 200 volts
Wrist StrapANSI/ESD S1.10.8 x 10E6 to
1.2 x 10E6 ohms
WristbandANSI/ESD S1.1Interior
> 1 x 10E5 ohms
For compliance verification of a
wrist strap system, see Personnel
Grounding Requirement Table
Exterior
> 1 x 10E7 ohms
Personnel Ground
wrist strap connection
(non-monitored)
ANSI/ESD S6.1Point to Ground
< 2 ohms
ESD TR53
Grounding Bonding
Systems
Point to Ground
< 2 ohms
FootwearANSI/ESD STM9.1Point to
Groundable Point
< 1 x 10E9 ohms
For compliance verification of
Footwear/Flooring System, see
Personnel Grounding
Requirement Table.
Foot GroundersESD SP9.2Point to
Groundable Point
< 1 x 10E9 ohms
FlooringANSI/ESD STM7.1Point to Point
< 1 x 10E9
Point to
Groundable Point
< 1 x 10E9 ohms
SeatingANSI/ESD STM12.1Point to
Groundable Point
< 1 x 10E9 ohms
ESD TR53
Seating Section
Point to Ground
< 1 x 10E9 ohms
IonizationANSI/ESD STM3.1Discharge Time
User defined
ESD TR5311
Ionization Section
Discharged Time
User defined
Offset Voltage
-35 < V offset < 35
Offset Voltage
-35 < V offset < 35
Shelving
(When used to store
unprotected ESDS)
ANSI/ESD S4.1Point to
Groundable Point
< 1 x 10E9 ohms
ESD TR53
Worksurface Section
Point to Ground
< 1 x 10E9 ohms
Mobile Equipment
(Working Surfaces)
ANSI/ESD S4.1Point to Point
< x 10E9
ESD TR53 Mobile
Equipment Section
Point to Ground
< 1 x 10E9 ohms
Point to
Groundable Point
< 1 x 10E9 ohms
Electrical Soldering/
Desoldering
Hand Tools
ANSI/ESD S13.1Tip to Ground
< 2.0 ohms
ESD TR53
Soldering Iron
Section Or
ANSI/ESD S13.1
Section 6.1
Tip to Ground
< 10 ohms
Tip < 20 millivolts
Tip Leakage
< 10 milliamps
Continuous
Monitors
User definedUser definedESD TR53
Continuous
Monitors Section
Manufacturer
defined
Static-Control
Garment
ANSI/ESD STM2.1Point to Point
< 1 x 1011 ohms
ESD TR53
Garments Section
Resistance Point
to Point
< 1 x 1011
Groundable
Static-Control
Garment
ANSI/ESD STM2.1Point to
Groundable Point
< 1 x 10E9 ohms
ESD TR53
Garments Section
Resistance to
Groundable Point
< 1 x 10E9 ohms
Groundable
Static-Control
Garment System
ANSI/ESD STM2.1< 3.5 x 10E7 ohmsESD TR53
Personal
Grounding with
Garments Section
< 3.5 x 10E7 ohms

Technical
Requirement
ESD Control
Item
Product Qualification7