The EN374: 2003 standard is renamed ENISO374: 2016. The purpose of this standard is to classify gloves according to their behavior when exposed to chemical substances.
They are divided into the following parts:
EN ISO 374-1:2016 - Terminology and performance requirements for chemical risks.
EN 374-2:2014 - Determination of resistance to penetration.
EN 16523-1:2015 + A1:2018 - Permeation by liquid chemicals under continuous contact conditions.
EN ISO 374-4:2019 - Determination of resistance to chemical degradation.
EN ISO 374-5:2016 - Terminology and requirements demanded for risks of microorganisms.
Gloves classification according to ENISO374-1: 2016
Gloves are divided into three types:
TYPE A
Step time ≥ 30 min for at least 6 products
TYPE B
Step time ≥ 30 min for at least 3 products
TYPE C
Step time ≥ 10 min for at least 1 products
|
LETTER
|
CHEMICAL SUBSTANCE
|
CAS NUMBER
|
CLASS
|
|
A
|
Methanol
|
67-56-1
|
Primary alcohol
|
|
B
|
Acetone
|
67-64-1
|
Cetone
|
|
C
|
Acetonitrile
|
75-05-8
|
Nitrile compound
|
|
D
|
Dichloromethane
|
75-09-2
|
Chlorine hydrocarbon
|
|
E
|
Carbon disulfide
|
75-15-0
|
Sulphate organic compound
|
|
F
|
Toluene
|
108-88-3
|
Aromatic hydrocarbon
|
|
G
|
Diethylamine
|
109-89-7
|
Amine
|
|
H
|
Tetrahydrofuran
|
109-99-9
|
Heterocyclic ether
|
|
I
|
Ethyl acetate
|
141-78-6
|
Ester
|
|
J
|
n-heptane
|
142-85-5
|
Saturated hydrocarbon
|
|
K
|
Sodium Hydroxide 40%
|
1310-73-2
|
Inorganic alkaline
|
|
L
|
Sulphuric acid 96%
|
7664-93-9
|
Inorganic, oxidising mineral acid
|
|
M
|
Nitric acid 65%
|
7697-37-2
|
Inorganic, oxidising mineral acid
|
|
N
|
Acetic acid 99%
|
64-19-7
|
Organic acid
|
|
O
|
Ammonia Hydroxide 25%
|
1332-21-6
|
Organic Alkaline
|
|
P
|
Hydrogen peroxide 30%
|
7722-84-1
|
Peroxide
|
|
S
|
Hydrofluoric acid 40%
|
7664-39-3
|
Mineral organic acid
|
|
T
|
Formaldehyde 37%
|
50-00-0
|
Aldehyde
|
Levels of resistance to permeability
|
TAVERAGE PENETRATION TIME
|
PERFORMANCE LEVELS
|
AVERAGE PENETRATION TIME
|
PERFORMANCE LEVELS
|
|
> 10
|
Class 1
|
> 120
|
Class 4
|
|
> 30
|
Class 2
|
> 240
|
Class 5
|
|
> 60
|
Class 3
|
> 480
|
Class 6
|
Gloves classification according to EN374-2:2014
It is the advance of chemical products through the material, seams of the glove at a non-molecular level. Air leak test: the glove is inflated with air and immersed in water. The appearance of air bubbles is controlled within 30 '. Water leak test: the glove is filled with water and the appearance of water droplets is controlled. If these tests are positive, the pictogram will be put on.
Gloves classification according to EN374-4: 2013
Detriment to some of the glove's properties due to contact with a chemical. Eg: discoloration, hardening, softening, etc.Permeation test EN 16523-1. It is the advancement of chemicals at the molecular level. The resistance of the glove material to permeation by a chemical is determined by measuring the time it passes through the material.
Modification of the ENISO374-5: 2016 standard
When the glove passes the test described for virus protection, the word “virus” will appear under the pictogram. If nothing appeared, protection would only be assured against bacteria.
