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1149-1 Antistatic Standard

This standard defines test methods and requirements for the electrostatic properties of protective clothing. Surface resistivity must be less than 5x1010 Ω for homogeneous materials and at least one surface of inhomogeneous materials. Inhomogeneous materials with conductive threads must have resistance less than 109 Ω in a grid pattern with maximum 10 mm spacing. Testing involves measuring resistance between concentric cylindrical electrodes after applying a 100V potential to determine surface resistivity in Ohms. Marking and user information must comply with EN 340.

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928 views1 page

1149-1 Antistatic Standard

This standard defines test methods and requirements for the electrostatic properties of protective clothing. Surface resistivity must be less than 5x1010 Ω for homogeneous materials and at least one surface of inhomogeneous materials. Inhomogeneous materials with conductive threads must have resistance less than 109 Ω in a grid pattern with maximum 10 mm spacing. Testing involves measuring resistance between concentric cylindrical electrodes after applying a 100V potential to determine surface resistivity in Ohms. Marking and user information must comply with EN 340.

Uploaded by

anitha
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Protective clothing - electrostatic properties - Part 1: surface resistivity

Reference number : EN 1149-1


Status : European Standard
Scope : This standard defines a test method and requirements for electrostatic properties of protective clothing.

CONTENT
General requirements:

For homogeneous materials the surface resistivity : < 5 x 1010 Ω

For inhomogeneous materials which are coated or laminated at least one surface shall comply with the requirement :

• Resistivity : < 5 x 1010 Ω

Inhomogeneous materials containing conducting threads shall have

• a resistance <109 Ω
• a grid pattern of conducting threads
• a maximum space of 10 mm between the conducting threads

Design requirements:

According to EN 340

• A two piece suit or a one piece suit:


◦ covering the body, arms and legs
◦ direct contact with the skin (at neck and wrists, through folds at the end of the garment)
• width of closure accessories < 10 mm

Test method:

UA cylindrical and annular electrode concentrically arranged (type A: stainless steel, brass type: B). The insulation
resistance between inner and outer electrode > 1014Ω

The specimen is placed on an insulating base plate and the electrode assembly is placed on the specimen. A DC
potential of 100 ± 5 V is applied, after 15 ± 1 s the resistance is measured.

• The surface resistivity ρ in Ohm: ρ = k X R


◦ k: geometrical factor of the electrode (type A: 19,8 and type B: 5,7)
◦ R: measured resistance

Marking:

According to EN 340

Information for the user:

According to EN 340

• information that the electrostatic propensity decreases with the number of cleaning procedures and wearing time.
• information when and how to maintain the electrostatic properties.

Pictogram:

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