PROTECTIVE CLOTHING & WORKWEAR
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Dexterity is graded by the diameter of the smallest steel pin that can be picked up from a flat surface three times in 30 seconds. If no pin can be picked up, then the level achieved is zero. If required, finger dexterity can be assessed, for a specific use.
Clause 5.3 outlines optional requirements for breathability and comfort. Within this clause requirements are given for claiming water vapour transmission and absorption. Water vapour transmission for leather gloves, is assessed in accordance with ISO 14268:2012, to a requirement of 5 mg/cm2 per hour and in accordance with ISO 11092:2014 to a requirement of 30 m2 Pa/W for textile gloves.
Water vapour absorption should be considered where the protection characteristics of the glove inhibit water vapour transmission. This means that, as an alternative, the gloves should be designed to reduce absorption of perspiration where possible. This is outlined in clause 5.3.2, which gives a requirement of 8 mg/cm2 per hour for leather gloves, when tested in accordance with ISO 20344:2011.
NOTABLE CHANGES FROM EN
420:2003+A1:2009 A large consideration when updating gloves that have already been type-approved to this new standard are the changes or additions from EN 420:2003+A1:2009.
Reusable multilayer gloves must be taken off without separation of the layers, as outlined in clause 4.1.
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“Dexterity is graded by the diameter of the smallest steel pin that can be picked up from a flat surface three times in 30 seconds.”
Gloves that are intended to be worn in areas where flammable or explosive risks might be present shall be tested for electrostatic properties in accordance with EN 16530. Previously, in EN 420, the test methods referenced were EN 1149 parts 1, 2 or 3 and the electrostatic pictogram could not be used.
It is important to be aware that a list of known allergens present within a protective glove shall be supplied upon request and a list of such substances is included in Annex G.
There have also been a few changes to the requirements for chemical innocuousness of gloves. Firstly, extractable proteins for natural rubber latex gloves is no longer listed as a mandatory test. However, a warning must be included for gloves containing any natural rubber as the glove contains natural rubber which may cause allergic reactions. In addition, there are new requirements to test for presence of azo colourants, dimethylformamide (DMFa) and PAHs.
Due to the ever-growing initiative for sustainability, there are also additional environmental aspects to be considered (this is outlined in Annex F). EN ISO 21420 has also included references to both REACH and the Classification, Labelling & Packaging (CLP) regulation for hazardous substances to ensure the chemical innocuousness assessments keep up to date with the latest chemical restrictions.
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