EN 374-1-2003 pdf download.Protective gloves against chemicals and micro-organisms Part 1: Terminology and performance requirements.
This EN 374-1 specifies the requirements for 9loves to protect the user against chemicals andior micro-organisms
and defines terms to be used.
This standard should be used in conjunction with EN 420.
This standard does not specify requirements for protection against any mechanical hazards.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision, For undated references, the latest edition of the publication referred to applies (including amendments).
EN 374-2,
EN 374-3,
EN 388, Protective gloves againsi mechanical risks.
EN 420, General requirements for gloves.
3 Terms and definitions
For the purposes of this European Standard, the following terms and definitions apply.
3.1
protective glove material
any material or combination of materials used in a glove for the purpose of isolating the hands or hands and arms from direct contact with a chemical and/or micro-Organism
3.2
protective gloves against micro-organisms
at this time it is believed that gloves which resist penetration, when tested according to 5.2, form an effective barrier to bacteria and fungi. This assumption does not apply to protection against viruses.
3.3
degradation
deleterious change in one or more properties of a protective glove material due to contact with a chemical, These changes include flaking, swelling, disintegration, embrittlement. discolouration, dimensions, appearance, hardening, softening, etc
3.4
penetration
movement of a chemical andior micro-organism through porous materials, seams, pirihdes, or other imperfections in a protective glove material on a non-molecular level
3.5
permeation
process by which a chemical moves through a protective glove material on a molecular level. Permeation involves the following:
absorption of molecules of the chemical into the contacted (outside) surface of a material;
— diffusion of the absorbed molecules in the material;
— desorption of the molecules from the opposite (inside) surface of the material.
3.6
test chemical
chemical or mixture of chemicals that is used to determine the breakthrough time in the laboratory test conditions. The chemical will be one which causes adverse effects on the skin or to the human body by contact with the skin.
3.7
breakthrough time
elapsed time between the initial application of a test chemical to the outside surface of a protective glove material and its subsequent presence on the other side of the material, measured as described in EN 374-3.
4 Method of testing
Detailed test methods will be found in the following parts of this standard:
— Penetration: EN 374-2;
— Permeation: EN 374-3.
5 Performance requirements
5.1 Minimum liquid proof length
The minimum length of the liquid proof section of the glove shall be at least equal to the minimum length of gloves
specified in EN 420
5.2 Penetration
52.1 Gloves shall not leak when tested according to the test methods n EN 374-2 (5.2 and 5.3) and both test shall be passed according to the criteria in the relevent clauses of EN 374-2. It one test proves unsuitable, the reasons shall be reported.
5.2.2 A glove shall be considered as micro-organism resistant when it conforms to at least level 2 of the penetration test of annex A of EN 374-2.
5.3 Permeation
5.3.1 Each combination protective glove/test chemical is classified, in terms of breakthrough time, according to each individual chemical for which the glove resists permeation.
NOTE The performance leve’s given below are based on breakthrough times determined dunng constant contact with the test chemical under standard laboratory conditions as described in EN 374-3, The actual duration of protection provided in the workplace may vary considerably from these performance levels.EN 374-1-2003 pdf download.