EN 420:2003 is a reference Standard to be used with specific regulations for protection gloves. This means that this standard is not to be applied independently or by itself to certify protection gloves.
The standard defines construction and design requirements for gloves, standardizing resistance to water penetration, harmlessness, (pH and Chrome VI content), comfort and efficiency, labelling and information supplied by the manufacturer. It also applies to gloves and arm protectors permanently joined to hermetic suits.
|UNE-EN 420. GENERAL REQUIREMENTS|
|Hand size||Glove size|
|Sizes||Diameter mm||Length mm||Minimum glove length|
Each protection glove is to be labelled, supplying the following information:
- Name, brand or means of identifying manufacturer or authorized representative.
- Glove model or name (trade name or code, for users to identify the product with range by manufacturer or authorized representative).
- If required, indicate valid period of time for use (use before xx-xx).
- Whenever the glove complies with one or more European standards, the respective pictographs. Each pictograph needs to be accompanied by the standard reference and performance levels, to be mentioned always in the right sequence as defined by standard.
The standard EN 388: 2016 applies to all types of protective gloves intended to protect against mechanical risks caused by abrasion, knife cutting, perforation, tearing and impact when applicable. They are Category 2 gloves. This standard can also be applied to arm protectors other than glove or clothing.
|UNE-EN 388. MECHANICAL HAZARDS|
|Minimum performance levels||1||2||3||4||5|
|A||Resistance against abrasion (cycles)||100||500||2000||8000||-|
|B||Resistance against blade cuts (index)||1,2||2,5||5||10||20|
|C||Resistance against tear (newtons)||10||25||50||75||-|
|D||Resistance against puncture (newtons)||20||60||100||150||-|
METHODS OF TESTING AT 388: 2016
- A / Abrasion resistance
A team called Mantindale Wear and Abrasion Machine is used. The new abrasive paper used is Klingspor PL31B Grit 180.
The resistance to abrasion is measured by the number of cycles necessary for the rupture of the sample to occur
- B / Resistance to cutting by blade
Special equipment is used, consisting mainly of a test bench capable of supporting a rotating circular blade.
The cutting speed of the blade goes from 10cm / s to 8cm / s + -2cm / s.
The sharpening of the blade is done according to the following parameters: the first cut must be between 0.8 and 1.4 cycles (before 1 and 4) and the four remaining cuts between 0.8 and 2 cycles (before 1 and 2) .
If after 60 cycles the specimen has not been cut, it is stopped manually to check the wear of the blade.
If the glove dulls the blade, it will be necessary to make the cutting test according to ISO 13997 and that value will be the reference to take into account. In that case, no value will be provided according to the cutting test by blade (X will be set).
- C / Tear resistance
The force necessary to propagate a tear in a rectangular sample that has been cut along its half length is measured. Traction machines equipped with force measurement systems are used.
- D / Puncture resistance
The force exerted by a steel punch of certain dimensions to measure a sample placed in a support device is measured.
- E / Cut by sharp objects
For materials with high cutting resistance that blunt the blade, it will be mandatory to carry out a new cutting test according to ISO 13997: 1999. Test pieces of at least 25 x 100 mm are taken. The test pieces are mounted on the TDM100 test equipment by gluing the material with a double-sided tape. A strip of conductive material (copper) is placed between the sample and the adhesive. The standardized blade is replaced with a new one for each cut. The equipment is activated, the weights are placed and the blade moves on the sample until the cut is made. The test is repeated until obtaining:
- Five values between 5 and 15 mm.
- Five values between 15 and 30 mm.
- Five values between 30 and 50 mm.
With these values a graph is made that determines the force necessary to cut the material with a cut displacement of 20 mm. The result is verified (Cut to 20 mm) making 5 cuts with the force established in the graph. If the result is not verified with this force, the force is recalculated and 5 more cuts are made.
|6.3 cut resistance (N) EN ISO||2||5||10||15||22||30|
- F / Protection against impact
When the gloves have a specific impact mitigation according to EN 13594: 2015, they are considered to meet this requirement. In that case, a P will be added to the pictogram.
The standard ISO EN 374: 2016 establishes the requirements for gloves intended for the protection of the user against chemical products and / or microorganisms. This standard does not establish mechanical protection requirements. All gloves are category 3.
It is divided into the following parts:
- ISO EN 374-1: 2016: Terminology and requirements for chemical risks.
- EN 374-2: 2014: Determination of resistance to penetration.
- EN 16523-1: 2015: Permeation by liquid chemicals under conditions of continuous contact.
- EN 374-4: 2013: Determination of resistance to degradation by chemicals.
- ISO EN 374-5: 2016: Terminology and requirements for micro-organisms risks.
The gloves are divided into three types:
- Type A: those that have been tested for the permeation of 6 chemicals in the table and have a minimum level of 2.
- Type B: those that have been tested for the permeation of 3 chemical products in the table and have a minimum level of 2.
- Type C: those that have been tested for the permeation of 1 chemical in the table and have a minimum level of 1.
- Penetration test 374-2
It is the advance of chemical products through the material, glove seams 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 droplets of water is controlled.
If these tests are positive, the pictogram will be set
- Degradation test EN 374-4
Detriment to any of the glove's properties due to contact with a chemical. Eg: discoloration, hardening, softening, etc. • Permeation test EN 16523-1
It is the advance of chemical products at the molecular level. The resistance of the material of a glove to the permeation by a chemical is determined by measuring the passage time of the same through the material.
|Average penetration time||Performance levels|
List of chemical products
|LETTER CODE||CHEMICAL PRODUCT||Nº CAS||CLASS|
|C||Acetonitrile||75-05-8||organic compound containing nitrile groups|
|E||carbon disulfide||75-15-0||Organic compound containing sulfur|
|H||Tetrahidrofunaro||109-99-9||Heterocyclic compound and ether|
|K||Sodium hydroxide 40%||1310-732||Inorganic base|
|L||Sulfuric acid 96%||7664-93-9||Inorganic mineral acid|
|M||Nitric acid 65%||7697-37-2||Inorganic mineral acid, oxidant|
|N||Acetic acid 99%||64-19-7||Organic acid|
|O||25% ammonium hydroxide||1332-21-6||Organic base|
|P||Hydrogen peroxide 30%||7722-84-1||Peroxide|
|S||Hydrofluoride acid 40%||7664-39-3||Mineral inorganic acid|
EN ISO 374-5
- The protective gloves against micro-organisms offer protection against bacteria and fungi when they comply with EN 374-2 (air leakage and water leakage).
- Gloves that also offer protection against viruses must comply with ISO 16604: protection against penetration by Phi-X174 bacteriophages transported in blood.
|UNE-EN 374 1.2
RISKS BY MICROORGANISMS
|Levels of resistance Penetration
(AQL quality level)
|Step level||Acceptable quality||Inspection levels|
|UNE-EN 374 1.2.3
|Levels of resistance to permeability *|
|Average penetration time (min)||Levels of provision|
|* Time it takes a chemical to penetrate the glove.|
UNE-EN 407 specifies testing methods, general requirements, thermal protection performance levels and labelling for gloves protecting against heat and / or fire. It is mandatory for all gloves protecting hands from heat and/or flames, in one of more of the following ways: fire, contact heat, convection heat, radiating heat, molten metal minor or major spills.
It is to be born in mind that tests will only determine performance – and not protection – levels. If gloves re designed to bear temperatures below 100°C, they will be Category 2. If they bear temperatures over 100°C, they will be Category 3.
|UNE-EN 407. THERMAL, HEAT AND FLAME HAZARDS|
|A||Flammability||Post flame ignition||≤20"||≤10"||≤3"||≤2"|
|Post incandescence||Sin requis.||≤120"||≤25"||≤5"|
|B||Contact heat||15 seconds at||100°C||250°C||350°C||500°C|
|C||Convection heat||Heat transmission (HIT)||≥4"||≥7"||≥10"||≥18"|
|D||Radiating heat||Heat transmission (t3)||≥7"||≥20"||≥50"||≥95"|
|E||Molten metal minor spills||Number of drops it takes to reach temperature of 40°C||≥10"||≥15"||≥25"||≥35"|
|F||Large mass of molten||Grams of molten metal it takes to cause||30||60||120||200|
UNE-EN 511 defines requirements and testing methods for gloves protecting against convection or conduction cold up to – 50°C. Cold may be caused by weather conditions or industrial activity. Specific values for the different performance levels are defined in accordance to hazard type or application area.
WARNING: These products are tested to determine performance (not protection) levels. These gloves are Category 2 Personal Protection Equipment items. There are Category 3 gloves, though not covered by this standard.
Gloves need to comply at least with requirements of level 1 for resistance against abrasion and tear as per UNE-EN 388.
|UNE-EN 511. EXTREME COLD HAZARD|
|A||Resistance against convection cold||Thermal insulation (ITR) in m2 °C/W||≥0,10||≥0,15||≥0,22||≥0,30|
|B||Resistance against contact cold||
|C||Waterproofability||Level 1: waterproof for at least 30 minutes|
Special gloves for firefighters’ use, allowing them to work for long periods of time under hazardous and dangerous conditions. However, it is not possible to relate lab performance levels to actual protection levels.
These gloves are not designed to be used when deliberately handling chemical fluids, but will nevertheless protect against accidental contact with chemicals.
Protection gloves for special firefighting operations are excluded from application field defined by EN 659.
Firefighters’ gloves are Category 3 Personal Protection Equipment items.
|UNE-EN 659. FIREFIGHTERS’ GLOVES|
|Minimum Length of glove (EN 388)|
|Size||Minimum length (cm)|
|UNE-EN 659. FIREFIGHTERS’ GLOVES|
|UNE-EN 388||UNE-EN 407|
* Contact temperature 250 °C. Threshold time at least, 10 s
** In accordance to EN ISO 6942
Gloves for motorbikers are designed to protect against weather conditions while maintaining user’s dexterity and ability to manage switches and controls. In addition, these gloves will protect hands and wrists against mechanical hazards in the event of an accident.
Most frequent motorcycle accidents will involve collision, against other vehicles, pavement or elements like posts, etc.
These gloves are Category 2.