What Does EN ISO 374 Cover?

EN ISO 374 is a series of standards for protective gloves against dangerous chemicals and micro-organisms.

EN ISO 374-1 covers chemical risks and classifies chemical protective gloves as Type A, Type B or Type C. The classification depends on how many specified test chemicals meet the required permeation performance.

EN ISO 374-5 covers protection against micro-organisms, including bacteria, fungi and, where specifically tested, viruses.

EN ISO 374-1 Type A Pictogram

Type A provides the broadest chemical permeation coverage within the EN ISO 374-1 classification system.

The glove must achieve at least permeation performance level 2, corresponding to a breakthrough time of at least 30 minutes, for at least 6 test chemicals from the specified list.

The corresponding chemical letter codes are displayed underneath the pictogram. A Type A marking therefore contains at least six chemical letters identifying the chemicals for which the required performance has been demonstrated.

Only use chemical letter codes supported by the actual test results for the glove.

EN ISO 374-1 Type B Pictogram

Type B requires the glove to achieve at least permeation performance level 2, corresponding to a breakthrough time of at least 30 minutes, for at least 3 test chemicals from the specified list.

At least three corresponding chemical letter codes are displayed underneath the pictogram.

Type B therefore covers fewer qualifying test chemicals than Type A, but the minimum permeation performance for each qualifying chemical is the same.

EN ISO 374-1 Type C Pictogram

Type C requires the glove to achieve at least permeation performance level 1, corresponding to a breakthrough time of at least 10 minutes, for at least 1 test chemical from the specified list.

Unlike Type A and Type B, chemical letter codes are not displayed underneath the Type C pictogram.

In short:

Type A - at least 6 chemicals - at least 30 minutes

Type B - at least 3 chemicals - at least 30 minutes

Type C - at least 1 chemical - at least 10 minutes

EN ISO 374-5 Micro-organism Pictogram

EN ISO 374-5 covers protective gloves intended to protect against micro-organisms.

The biohazard pictogram is used for gloves meeting the applicable requirements for protection against bacteria and fungi.

Protection against bacteria and fungi does not automatically mean that protection against viruses has also been demonstrated.

EN ISO 374-5 Virus Pictogram

When the additional requirements for protection against viruses have been met, the biohazard pictogram is accompanied by the word VIRUS.

Only use the VIRUS marking when the glove has passed the applicable virus penetration test. A glove carrying only the micro-organism marking should not be presented as providing virus protection.

Which Products Use EN ISO 374 Pictograms?

EN ISO 374 pictograms are used on protective gloves designed for chemical or biological hazards.

Typical examples include chemical-resistant gloves, laboratory gloves, industrial protective gloves, cleaning gloves and other protective hand equipment intended to protect against dangerous chemicals or micro-organisms.

The correct marking depends on the hazards against which the glove has actually been tested and certified.

You Might Also Need These Pictograms and Marks

Protective gloves intended for food handling may also need to meet applicable food contact requirements. See our Food Contact Symbols page. If the gloves also provide protection against mechanical risks, the EN 388 pictogram may apply.

Protective gloves sold as PPE in the EU are also subject to Regulation (EU) 2016/425 and require CE marking once the applicable conformity requirements have been met.

Download

Download EN ISO 374-1 Type A pictogram

 en-iso-374-1-type-a.pngen-iso-374-1-type-a.svgen-iso-374-1-type-a.pdf

Download EN ISO 374-1 Type B pictogram

 en-iso-374-1-type-B.pngen-iso-374-1-type-B.svgen-iso-374-1-type-B.pdf

Download EN ISO 374-1 Type C pictogram

 en-iso-374-1-type-c.pngen-iso-374-1-type-c.svgen-iso-374-1-type-c.pdf

Download EN ISO 374-5 micro-organism pictogram

 en-iso-374-5.pngen-iso-374-5.svgen-iso-374-5.pdf

Download EN ISO 374-5 virus pictogram

 en-iso-374-5-virus.pngen-iso-374-5-virus.svgen-iso-374-5-virus.pdf

The downloadable pictograms do not include product-specific chemical letter codes or test claims. Use the appropriate pictogram and add only chemical codes and protection claims supported by the testing and conformity assessment of your gloves.

Looking for another marking? View all PPE symbols.