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The EN 388 standard is commonplace across Europe when it comes to evaluating the durability of safety gloves. This European standard outlines the specific testing procedures and performance metrics manufacturers must meet when designing and marketing gloves as protection against mechanical risks.
Protection against mechanical risks of abrasion, blade cut, tear, puncture and, if applicable, impact.
It is developed to determine the levels of protection against different risks to be defined.
Specified and tested levels of resistance to the following risks:
• Abrasion (1 to 4): number of cycles needed to break the glove at constant speed.
• Cutting by slicing (1 to 5): index calculated based on the number of cycles needed to cut the glove at constant speed.
• Tearing (1 to 4): force needed to tear the glove.
• Puncturing (1 to 4): force needed to puncture the glove with a standardized steel pin.
Coup Test – A circular blade rotates while moving back and forth across the sample under a fixed load of 500 grams (5N) at a constant speed. The test is stopped when the rotating blade cuts-through the glove material.
Result is calculated based on the number of blade revolutions needed to cut-through, then it is compared to a Cut Index.
* TDM-100 Test – This test uses a straight blade drawn across a specimen until cut-through takes place. The contact load applied to the blade over a 20mm stroke length is also measured.
Both force and cut-through length are plotted on a scatter graph and a trend line is generated.
Last modified in 2016, the EN ISO 374:2016 standard tests a glove’s response to an extensive list of chemicals and microorganisms to protect workers’ hands subject to such exposure.
These exposures can cause serious harm for both personal health and the environment, which is why the standard is divided into five parts that test permeability, penetration, degradation, and more to help ensure gloves’ safety.
Penetration – is the flow of chemicals and micro-organisms through the porous material, seams, small holes or other small defects in the glove material.
Permeation – is the process where a chemical passes through the glove’s material on a molecular level. Permeation has two kinds,diffusion and desorption. Diffusion is the movement of molecules through the material while desorption is the outward flow of molecules from inside the glove.
Degradation – is the deterioration of the physical properties of the glove in contact with the chemical. Degradation Resistance (DR) shall be reported in the User Instruction.
This test method determines the gloves protection level against electric arc by measuring the amount of thermal energy transmitted through the gloves during and after exposure to an electric arc.
The arc thermal performance value, ATPV cal / cm2, is the penetrating energy into the gloves material that results in a 50% probability of sufficient heat transfer through the gloves to cause the onset of a second-degree skin burn.
The higher ATPV value the glove achieves in testing, the higher energy it protects against in the event of an arc exposure. Note that these gloves can reduce the damage in case of exposure to electrical arc, but do not eliminate the risk of injury.
The gloves’ level of protection can be adversely affected after contact with for example gasoline, diesel fuel, transformer oil, sweat, dirt, grease or other contaminants.
It is the user’s responsibility to determine appropriate safety, health and environmental practices and determine the application of regulatory restrictions prior to use.
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Hand protection remains one of the most overlooked areas of occupational safety, despite the hand being the body’s primary point of contact with work.
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