ISO 21420:2020 download free.Protective gloves – General requirements and test methods.
1 Scope
ISO 21420 specifies the general requirements and relevant test procedures for glove design and construction. innocuousness, comfort and efficiency, as well as the marking and rnformatlon supplied by the manufacturer applicable to all protective gloves.
It can also apply to arm protectors and gloves permanently incorporated in containment enclosures.
Gloves and hand protectors such as mittens. pot holders and arm protection are covered by this document.
ISO 21420 does not address the protective properties of gloves and therefore is not used alone but only in combination with the appropriate specific standard(s). A non-exhaustive list of these standards is given in the Bibliography.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (Including any amendments) applies.
ISO 3071, Textiles — Determination of pH of aqueous extract
ISO 3758, Textile5 — Care labelling code using symbols
ISO 4045:2018, Leather — Chemical tests — Determination of p11 and difference figure
ISO 7000:2014, Gra phical symbols for use on equipment — Regist ered symbols
ISO 11092. Textiles — Physiological effects — Measurement of thermal and water-vapour resistance under steady-state conditions (sweating guarded-hotplate test)
ISO 14268, Leather — Physical and mechanical tests — Determination of water vapour permeability
ISO 14362-1, Textiles — Methods for determination of certain aromatic amines derived from azo colorants — Part 1: Detection of the use of certain usa colorants accessible with and without extracting the fibres
ISOITS 16190, Footwear — Critical substances potentialfr present in footwear and footwear components — Test method to quantitatively determine polycyclic aromatic hydrocarbons (PAH) in footwear materials
ISO 17075-1, Leather — Chemical determination of chromium(Vl) content in leather — Part 1:
Calorimetric method
ISO 17075-2, Leather — Chemical determination of chromium(Vl) content in leather — Part 2:
Chromatographic method
ISO 17234-1. Leather — Chemical tests for the determination of certain azo colorants in oyed leathers — Part 1: DetermInation of certain aromatic amines derived from azo colorants
ISO 20344:2011, Personal protective equipment — Test methodsforfootwear ISO 23388, Protective gloves against mechanical risks
EN 181 1+A1:2015, Reference test method for release of nickel from post assemblies which ore inserted into pierced parts of the human body and articles intended to come into direct and prolonged contact with the skin.
3.7
level ol performance
number or letter that designates a particular category or range of performance by which the results of testing can be graded
Note 1 to entry: The level of performance Is determined by the result of the corresponding test as described In the specific standards referred to In the Bibliography.
Note 2 to entry: A high level iiumber or letter corresponds to a high level of performance.
Mole 3 to entry: Levels of performance are based upon the results of laboratory tests, which do not iwcessarily reflect actual conditions in the workplace.
3.8
multllayer gloves
gloves containing more than one layer with some level of permanent connection between the layers
4 General requirements
4.1 Glove design and construction — General
The protective glove shall be designed and manufactured so that in the foreseeable conditions of use. the wearer can perform the activity as normally as possible with an appropriate protection. This document along with the appropriate specific standards shall be used to verify this adequation.
If required in the relevant specific standard (for example ISO 16073:2011, 5.7.3), the glove shall be designed to minimize the donning and doffing time.
For reusable multilayer gloves, (he gloves shall be able to be doffed without separnion of the layers of the lingers. When the glove construction includes seams, the material and strength of the seams shall be such that the overall performance of the glove is not significantly decreased as required in the relevant specific standards.
Test methods and requirements are stated in the specific standards listed in the Bibliography. The number of samples shall be as stated in the specific standard. If the standard requests at least x samples then x samples shall be tested. For uncertainties of measurement, see Annex D.
4.2 Innocuousness of protective gloves
Protective gloves shall not adversely affect the health or hygiene of the user. The materials should not, in the foreseeable conditions of normal use, release substances generally known to be toxic, carcinogenic. mutagenic. allergenic, toxic to reproduction, corrosive, sensitizing or irritating.
NOTE 1 Information on the classification and identification of hazardous substances can be found, e.g. In References (221 and (221-
NOTE 2 GuIdance on how to consider acceptability of materials in protective gloves is given In the flow chart in Annex E.
Materials should be selected to minimize the environmental Impact of the production and disposal of protective gloves (see also Annex F).
The examination shall determine whether the claim that the materials are suitable for use in the protective gloves is justified. Particular attention shall be paid to the presence of plasticisers. unreacted components, heavy metals, impurities and the chemical identity of pigments and dyes.
a) Chromium VI content En gloves containing leather shall be tested according to ISO 17075-1 or ISO 17075-2 and shall be less than 3,0 mg/kg of leather.
Depending on the measured Chromium VI content, the test report shall indicate:
62.4 Test result
The result corresponds to the smallest diameter of the pin that can be picked up according to the procedure in (2.3. The test result is the smallest performance level obtained on the 4 gloves.
6.2.5 Test report
The test report shall contain the information in 6, The performance level shall be given In accordance with Table 2.
6.3 Test method for determination of water vapour behaviour
6.3.1 Leather materials
6.3.1.1 Sampling
Only the main leathers (excluding e.g. reinforcements) used In glove palm and glove back shall be tested.
If the materials are different in palm and back, both sides shall be tested.
In case of multilayer construction, the textile lining matenals shall be tested and reported separately according to 6.32
6.3.1.2 Test procedure
The test shall be performed in accordance with ISO 142611.
6.3.2 Textile materials
6.3.2.1 Sampling
A sample of material as required in ISO 11092 shall be tested, provided the sample material and construction are identical with that of the glove.
If the matenals are different in palm and back, both sides shall be tested.
6.3.2.2 Test procedure
The test shall be performed In accordance with ISO 11092.
6.4 Test method for the determination of water vapour absorption of leather materials
6.4.1 SamplIng
Only the main leathers (excluding e.g. reinforcements) used in glove palm and glove back shall be tested.
In case of multilayer construction, the textile lining materials shall be removed before testing.
6.4.2 Test procedure
The test shall be performed In accordance with ISO 20344:2011,6.7.
6.5 Test report
The test report shall contain the following Information:
a) a reference to the clause of the relevant standard;
Performance level shall be in the same order as given within the relevant specific standard. They may be positioned anywhere next to the pictogram provided that they are in clear relation with it.
7.3.6 When protection Is limited to part of the hand only, this shall be mentioned.
7.3.7 If appropriate, warnings against problems likely to be encountered or limitation of use shall be mentioned. As an example, a warning could be given about the use of tear resistant gloves used in close proximity of rotating machlnery
7.3.8 II the materials constituting the gloves are known to lose their performances during recommended storage, information shall be given to ensure that the storage will not change the glove characteristics signifIcantly.
7.3.9 If it Is known that the design performance of the glove may be significantly affected by ageing, the necessary information to establish a reasonable obsolescence date as requested in 721.1 f) shall be given.
7.3,10 A warning for gloves containing any natural rubber, such as: the glove contains natural rubber which may cause allergic reactions”.
7.3.11 Instructions relevant to donning, doffing. adjusting the gloves, preserving comfort and hygiene of the hand, protection from contamination of the hand, and where relevant information concerning combination with other forms of PPE.
7.3.12 Any relevant instruction to check the integrity of the glove before using It (for example check that the glove does not present holes, cracks, tears, colour change and discard any glove presenting such defects).
7.3.13 Storage instructions.
7.3.14 If cleaning according to £3 is claimed, care symbols according to ISO 3758 or explanations and an acceptable number of cleaning cycles, shall be provided.
If cleaning is not recommended, it shall be indicated that the glove is not washable. This excludes single. use gloves.
7,3.15 If relevant, test results according to 4.4 along with reference of corresponding standard, atmosphere for testing. area of the glove tested and test method/electrode used and the voltage applied as per the relevant standard. Moreover, a written warning shall be provided to advise that all clothing and shoes worn with this type of glove shall also be designed taking the electrostatic risk into account.