Chemical Protective Gloves
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Chemical protective gloves must meet the requirements of European standard EN 374. This standard was modified substantially in 2016. These changes became effective once they were published in the Official Journal of the European Union.
EN 374 has several parts. Part one, officially referred to as EN ISO 374-1:2016, states: “Protective gloves against dangerous chemicals and micro-
organisms—Part 1: Terminology and performance requirements for chemical risks.”
Updates to Standard (2016)
The changes that have occurred can be summarized by comparison, below.
Previous standard language (EN 374-1:2003):
- “Protective gloves against chemicals and micro-organisms”
- Assumption of protection against micro-organisms
- 12 test chemicals
- Beaker for “waterproof protective gloves with limited protection against chemical dangers”
- Labeling on product should be a pictogram of conical flask with a minimum of 3 letters for test chemicals
The new standard, as of 2016, on the other hand, changes some of the language and also adds more specificity:
- “Protective gloves against dangerous chemicals and micro-organisms”
- Removal of reference to micro-organisms in the text (now part of part 5)
- Number of test chemicals increased from 12 to 18
- Beaker no longer used
- Gloves are classified as types A, B or C
- Change of labelling on the product now should depict a pictogram of conical flask with differing number of letters for test chemicals per type
The test chemicals have also increased in number. The test catalogue was extended as per the new 2016 standard. The chemicals with code letters from M to T are new, and now include nitric acid (65%), acetic acid (99%), ammonium hydroxide (25%), hydrogen peroxide (30%), hydrofluoric acid (40%) and formaldehyde (37%).
Marked for Protection
You can identify a glove’s chemical protection performance by looking at the Type at the top of the pictogram and the letters underneath it. The Type will tell you how many of the 18 chemicals listed in the table were tested with the glove to check its performance, as well as the expected minimal length of the protection against these chemicals. The Letter code denotes the tested chemicals within the EN 374 standard.
The markings for protective gloves was also updated, as follows:
- Type A: Protective glove with permeation resistance of at least 30 minutes each for at least six test chemicals.
- Type B: Protective glove with permeation resistance of at least 30 minutes each for at least three test chemicals.
- Type C: Protective glove with permeation resistance of at least 10 minutes for at least one test chemical.
Most chemical protective gloves can be assigned to type class A; only thin, disposable protective gloves will be assigned to types B and C.
Why 2016 Changes are Important
The 2016 EN ISO 374 standard ensures consistency in testing and helps users and safety professionals determine their chemical protection needs. The revised requirements are reflected in pictograms that appear on gloves and on glove dispenser boxes certified for chemical and micro-organism exposure.
According to the ISO website, “ISO 374-1:2016 specifies the requirements for protective gloves intended to protect the user against dangerous chemicals and defines terms to be used. If other protection features have to be covered, e.g., mechanical risks, thermal risks, electrostatic dissipation etc., the appropriate specific performance standard is to be used in addition. Further information on protective gloves standards can be found in the EN 420.”
To purchase the standard, go to https://www.iso.org/standard/66421.html