Choosing the right chemical protective glove is crucial for the safe handling of hazardous substances. Two central terms that are important here are "penetration" and "permeation". Understanding these concepts is crucial to ensure optimal protection in chemical work environments.
Important: The consequences of permeation and penetration are the same: a chemical penetrates a barrier and some of that chemical gets to the other side of the barrier.
Penetration: Avoid structural intrusion
Penetration refers to the penetration of chemicals through visible or microscopic defects in the glove material, such as seams, holes or micro-tears. Penetration tests, such as the water or air test, are indispensable methods to verify the integrity of a glove. Regular checks of this kind can detect weak points at an early stage and ensure the protective function of the glove.
Important: Penetration only occurs when there are holes and/or crevices through which the fluid can flow. It can be prevented if there is an undamaged barrier, then no penetration takes place.
➡️ Hint: Regular inspections and tests are necessary to ensure the protective effect of the glove when handling hazardous chemicals.
Permeation: Invisible penetration of chemicals
Permeation describes the insidious process in which chemicals penetrate through the glove material at the molecular level. This process depends on several factors, such as the composition of the material, the thickness of the glove, and the type of chemical. The permeation rate provides information about how quickly a substance diffuses through the material and thus the protective glove loses its barrier function.
Important: Permeation occurs even when there are no holes or gaps in the structure. It cannot be prevented. Permeation always occurs.
➡️ Important: Choosing the right glove material is crucial to ensure an effective barrier against chemicals and protect the wearer from potentially hazardous exposures.
AQL: Product Quality Benchmark
The Acceptable Quality Level (AQL) is a benchmark that determines the permissible number of defects in a batch of gloves. Especially in the field of chemical protective gloves, a low AQL value is essential, as it represents a higher probability of intact, protective gloves. A low AQL value means that the glove is more likely to withstand the strict requirements and has no undetected defects.
💡 Fact: Gloves with a low AQL value provide a more reliable barrier against chemical hazards and contribute significantly to safety in the working environment.
EN 374: European Standard for Chemical Protection
EN 374 is the authoritative standard for chemical protective gloves in Europe. This standard defines the requirements for protection against chemical risks and ensures that the gloves are thoroughly tested for their resistance to penetration and permeation. Gloves that are certified according to EN 374 ensure reliable protection in working environments where hazardous chemicals are handled.
📋 Tip: When selecting chemical protective gloves, make sure that they meet the requirements of EN 374 to ensure a high level of safety and compliance with standards.
Why knowledge of penetration and permeation is crucial
Understanding the differences between penetration and permeation is not only crucial for selecting the right protective equipment, but also helps to significantly increase safety in the workplace. Targeted knowledge of these processes can minimize potential hazards and create a safer working environment.
🔍 Quote: "Choosing the right chemical protective glove is crucial to ensure not only protection, but also safety and confidence at work." – Sonia Niedhart, Managing Director AAV GmbH
Conclusion: Well informed for more security
Differentiating between penetration and permeation is an essential part of choosing the right chemical protective glove. A sound understanding of these concepts makes it possible to ensure the best possible protection and thus create a safe, productive working environment.