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Size Chart

The ChemDefend® 255 range of protective coveralls are constructed from the latest generation of microporous polyethylene barrier film, glued to a lightweight but strong, spunbonded polypropylene structural layer. This delivers a durable and breathable material, with excellent barrier and repellency of liquid chemicals in the front of the coverall. The material is coated with an electrostatic dissipative layer.

ChemDefend® 255 range incorporates a back panel of breathable antistatic SMMS to assist heat loss and evaporation of sweat when working in hotter conditions, where there is a danger of heat stress.

The ChemDefend® 255 range material is soft, quiet and drapable and the coverall is constructed to offer optimum body fit, with generous use of fabric in the underarms, chest and waist to allow comfortable and unrestricted freedom of movement.

The garment incorporates a number of key design features to assist in maximising protection, comfort and strength and to ease the donning and doffing process.

The garment uses a sealed seam, bound with a barrier material to maximixe the seam strength. This reduces the risk of any splitting or tearing in use and serves to improve the liquid and particle repellency of the coverall.

Additionally, all the elastication within the coverall is fully bound and enclosed to assist comfort and reduce the linting of any threads or potential contaminant from the coverall.

EN1073-2:2002 – Protective clothing against radioactive particulate contamination.

EN1149-5:2008 – Protective clothing with electrostatic dissipative properties.

Type 5 – EN ISO 13982-1:2004+A1:2010 – Dry particle protection – suits which provide protection to the full body against airborne solid particles.

Type 6 – EN13034:2005+A1:2009 – Reduced spray-suits which offer limited protection against a light spray of liquid chemicals.

The product range is available in sizes Small to 3XL and a range of styles to suit different applications.

All Fabric data relates to the microporous component of the coverall. For the physical performance data of the SMMS back panel please refer to ChemDefend® 110 fabric and material data. Note that the SMMS back panel provides no barrier to infective agents. When assesing the mechanical and physical performance characteristics of ChemDefend® 255 in accordance with EN14325:2004 always use the lowest Class performance figures of the two materials.

Fabric Description

Microporous Polyethylene (PE) Laminate with SMMS back panel

Fabric Weight
60 gsm
Seam Type

Bound - which delivers maximum strength and liquid and particle barrier properties.

Colour Options

Suitable Applications

  • Agriculture - pesticide mixing and handling
  • Veterinary services
  • Pharmaceutical mixing and handling
  • Paint spraying
  • General cleaning and clean up operations

Available Models

Part Number Fabric Description
255W/002/BB/__/STD ChemDefend® 250 Coverall with 3 piece hood, elasticated wrists, waist and ankles. 2-way zipper with re-sealable storm flap, Microporous PE laminate fabric with breathable SMMS back panel. Fully sealed and enclosed elastication. Attached thumb loops.

Note: ChemDefend® does not give any warranties or make any representations about its coveralls other than those contained within the official literature supplied by ChemDefend® with each coverall. Risk analysis should be carried out by the user to select the appropriate PPE and it is the user's responsibility to select the correct combination of full body protective coverall and other equipment. The user will also need to determine how long a coverall can be worn for a particular use and/or exposure to a hazard, with regard it its protective performance, comfort and heat stress. Unless otherwise stated all test data relates to laboratory test data generated on fabrics only. Note that seams and closure systems may offer different, possibly lower chemical barrier protection.

Call us on +44 (0)1482 644220 or email

EN14325:2004 Fabric Physical Performance

Fabric Physical Tests according to EN 14325: 2004
Test Method Result EN Class
Abrasion Resistance EN530 Method 2 >500 <1000 cycles 3 of 6
Flex ISO 7854 Method B >5,000 < 15,000 3 of 6
Tear Resistanance EN ISO 9073-4 (MD) 79.5 N 4 of 6
Tear Resistanance EN ISO 9073-4 (CD) 34.3 N 2 of 6
Tensile Strength ISO 13934-1 (MD) 110 N 3 of 6
Tensile Strength ISO 13934-1 (CD) 41 N 1 of 6
Puncture Resistance EN 863 9.0 N

1 of 6

Additional Fabric Performance Data

Other Physical Performance Data
Description Result
EN 20811 Resistance to Water Penetration >14 kPa
ISO 13938-1 Bursting Resistance 157.0 kPa Class 2 of 6
EN 25978 Resistance to Blocking No Blocking
EN 1149-1: 2006 Electrostatic Surface Resistance


Half Decay t50= 0.01

R = 1.5 x 108 Ω

EN13688:2013 Protective Clothing General Requirements.

EN ISO 3071:2005 pH aqueous extract


The Moisture Vapour Transmission Rate ( MVTR)

ASTM E96 at 38°C and 90% Relative Humidity.

Microporous material

SMMS backpanel

3,500g/m2 /24hrs.

11,900g/m2 /24hrs

Whole Suit Performance

Whole Suit Results
Test Method Description Result
EN ISO 13982-2 Method B Type 5 Particulate Inward Leakage*


TIL = 2.4 %

Ljmn, 82/90 ≤ 7.1%

Ls, 8/10 ≤ 3.4 %

EN ISO 17491-4:2008 Method A Type 6 Reduced Spray Test* PASS (No Penetration on any suits.)
EN 1073-2;2002 Inward leakage test non-ventilated protective clothing against particulate radioactive contamination*


Class 1 of 3

NPF 31

TILE = 7.0%

TILA = 3.2%

EN ISO 13935-2 Seam Strength
Back panel: 88.0N Class 3 of 6.
Other seams: 79.0N Class 3 of 6

*Whole suit tests performed with wrists, cuffs, ankles and hood taped to ancillary PPE with the zip flap sealed.

TILE highest reading ( inward leakage) from the 3 exercises

Penetration and Repellency

Chemical Repellence EN368 / EN ISO 6530
Chemical Result EN Class
30% Sulphuric Acid 97.3% 3 of 3
10% Sodium Hydroxide 98% 3 of 3
o-Xylene 94.3% 2 of 3
Butan-1-ol 96.9% 3 of 3
Chemical Penetration EN368 / EN ISO 6530
Chemical Result EN Class
30% Sulphuric Acid 0% 3 of 3
10% Sodium Hydroxide 0% 3 of 3
o-Xylene 0.2% 3 of 3
Butan-1-ol 0% 3 of 3

Barrier to Biological and Infective Agents

EN 14126: 2003 - Barrier to Infective Agents
Test Method Result EN Class
ISO 16603 - Resistance to penetration by blood/fluids under pressure. Synthetic blood method Pass to 20kPa 6 of 6
SO 16604 - Resistance to penetration by blood borne pathogens. Phi-X174 method Pass to 20kPa 6 of 6
EN ISO 22610 - Resistance to wet bacterial penetration (mechanical contact) Penetration >75 mins
No Penetration
6 of 6
ISO/DIS 22611 - Resistance to biologically contaminated aerosols Penetration Ratio
Log 10 CFU >5
No Penetration
3 of 3
ISO 22612 - Resistance to dry microbial penetration Penetration Log Log10 CFU < 1
No Penetration
3 of 3

Get in touch

ChemDefend Co Ltd. Unit 15, Waterside Business Park, Livingstone Road, Hessle.

+44 (0)1482 644220
+44 (0)770 101 1148
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