TECHNICAL BULLETIN TB-3042
Heavy Duty Cotton Poly ESD Smocks
Installation and Maintenance
Made in the
United States of America
in the garment are designed to maintain electrical
continuity from panel to panel and from sleeve to
sleeve in accordance with the ESD Association
Garment Standard, ANSI/ESD STM2.1.
Heavy Duty Cotton Poly ESD Smocks are available in
the following sizes:
Item
73505
73506
73507
73508
73509
Figure 1. Desco Heavy Duty Cotton Poly ESD Smocks
Size
Small
Medium
Large
X Large
2X Large
Chest
34" - 36"
38" - 40"
42" - 44"
46" - 48"
50" - 52"
Sleeve
34"
34" - 3/8"
35"
35" - 1/2"
35" - 1/2"
Instructions for use
Description
Follow these directions for proper installation and
grounding of the Heavy Duty Cotton Poly ESD Smocks:
Put on the garment, fastening all the press studs on
the front of the smock; ensure no clothing is exposed
outside
of the smock. Note: EN 61340-5-1 paragraph 5.2.5
Garments “Coats, jackets, smocks and overalls shall
completely cover all clothing in the area of the arms
and torso.
“Garments that become worn or damaged should be
repaired or replaced by a qualified source to ensure
the electrical integrity of the seams. Once the repair
is made, the periodic test described above, should be
conducted to validate the repair.” (ESD TR20.20-2008
section 5.3.13.4.1 Repairs)
“For personnel safety, static control garments
should not be worn in situations where there is
exposure to high voltage. Regular laundering of static
control garments according to the manufacturer’s
recommendation is suggested to make sure conductive
fibers do not become contaminated and rendered
insulative. After laundering, thorough rinsing of the
garment will help eliminate the possible buildup of
chemicals on the conductive fibers, which can cause
them to become insulative. Drying garments at high
temperatures may degrade conductive fibers in fabrics
used to manufacture garments.” (ESD TR20.20-2008
section 5.3.13.6 Other Considerations)
Desco Heavy Duty Cotton Poly ESD Smocks is a
Static Control Garment with Rtg < 1 x10
11
ohms
meeting the required limits of ANSI/ESD S20.20 when
tested per ANSI/ESD STM2.1 or ESD TR53.
“Garments are intended to attenuate electrostatic fields
that may be present on personnel clothing. … While a
person may be grounded using a wrist strap or other
grounding methods, that does not mean that insulative
clothing fabrics can dissipate a charge to that person’s
skin and then to ground. Personnel clothing usually is
electrically separate or isolated from the body.” (ESD
TR20.20-2008 section 5.3.13.1)
Outfitting a work force in Heavy Duty Cotton Poly
ESD Smocks is the single most powerful step to
demonstrate a company’s commitment to their ESD
control program.
Garments can also be very important in field work, as
the area may be an uncontrolled environment which
can be very dry.
Desco Heavy Duty Cotton Poly ESD Smocks are
designed to be antistatic, low tribocharging and offer
protection to ESD sensitive items from electrostatic
fields generated by clothing on the user’s body.
The Heavy Duty Cotton Poly ESD Smocks create a
Faraday Cage around the torso of the wearer that
shield ESD susceptible items from static charges
generated on the wearers’ clothing.
The Heavy Duty Cotton Poly ESD Smocks are
constructed of a heavy weight cotton/poly blend with a
minimum of 1% conductive fiber providing continuous
and consistent charge dissipation. All of the seams
DESCO WEST
- 3651 Walnut Avenue, Chino, CA 91710 • (909) 627-8178
DESCO EAST
- One Colgate Way, Canton, MA 02021-1407 • (781) 821-8370 • Website:
Desco.com
TB-3042
August 2014 Page 1 of 2
© 2014 DESCO INDUSTRIES INC.
Employee Owned
Specifications
Fabric Weight
Fabric Content
Surface Resistance
of Fabric
Static Decay Rate
5 ounces/sq yard
Texturized polyester (65%),
cotton (34%) and a minimum
of 1% conductive fibers.
Rpp < 1 x 10
9
ohms per
ANSI/ESD STM2.1
5000 volts to 500 volts in less
than 0.1 seconds, per
FTMS-101C
Limited Warranty, Warranty Exclusions, Limit of
Liability and RMA Request Instructions
See Desco’s Terms and Conditions:
http://desco.descoindustries.com/TermsAndConditions.aspx
Compliance Verification Testing
Panel to panel conductivity is essential and easy to
test using our Digital Surface Resistance Meter Item
#19787, by placing 5 pound electrodes on different
panels. For additional information, refer to ANSI/ESD
S20.20, ESD TR20.20, the ESD Association Garment
Standard, ANSI/ESD STM2.1, and Compliance
Verification ESD TR53.
Maintenance
For proper operation, ESD garments must be
laundered periodically. Woolite works well. Liquid
detergents are better than dry in that there is less
caking and frictional wear. Launder garment in cool
or warm water, tumble dry with low heat or hang dry.
In terms of laundering the smocks by hand or with
a washing machine, most prefer using a washing
machine. This works well if using a standard house
machine on gentle cycle. Industrial machines are fine
if “Pony” (typically under 200 pound loads) machines
are used. It is not recommended to launder these
garments in heavy industrial laundry machines as it will
lead to premature wear. Garments should be tumbled
dry using low heat. DO NOT BLEACH.
The conductive fibers are sensitive to heat and should
not be exposed to laundering heat in excess of 120°F.
Use only non-ionic softeners and detergents when
laundering. Under normal wearing and recommended
washing conditions, Desco Heavy Duty Cotton Poly
ESD Smocks will maintain their usefulness and
effectiveness for a minimum of 50 washings.
DESCO WEST
- 3651 Walnut Avenue, Chino, CA 91710 • (909) 627-8178
DESCO EAST
- One Colgate Way, Canton, MA 02021-1407 • (781) 821-8370 • Website:
Desco.com
TB-3042
Page 2 of 2
© 2014 DESCO INDUSTRIES INC.
Employee Owned
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