When it comes to protective coveralls, not all garments offer the same level of protection. Different working environments and hazards require different standards. Understanding the coverall protection levels — from Level 1 to Level 4 — can help you choose the right one for your needs.
What Do the Levels Mean?
Coverall protection levels are commonly defined under the ANSI/AAMI PB70 standard, which classifies garments based on their ability to resist liquid penetration.
The higher the level, the stronger the protection against liquid and fluid exposure.
| Level | Protection Performance | Typical Applications | Notes |
|---|---|---|---|
| Level 1 – Minimal Protection | Provides basic barrier for light, non-hazardous exposure. | Routine patient care, basic cleaning, general inspection. | Lightweight, breathable, comfortable — but not suitable for liquid spray or pressure exposure. |
| Level 2 – Low Protection | Offers low-level fluid resistance for light exposure to liquids or aerosols. | Laboratory work, basic maintenance, handling non-toxic chemicals. | Slightly higher protection; still not for heavy liquid exposure. |
| Level 3 – Moderate Protection | Protects against moderate fluid exposure and light sprays. | Procedures with fluid contact, disinfection work, industrial cleaning. | Balances comfort and protection well; suitable for environments with limited liquid spray. |
| Level 4 – High Protection | Highest level of protection against heavy liquid exposure and pressurized fluids. | Chemical handling, high-risk environments, infectious control. | Maximum protection, but less breathable and may reduce comfort during long use. |
Choosing the Right Level
Selecting the right coverall level depends on your specific work environment and the types of hazards you face. Here are a few key factors to consider:
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Type of Hazard
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Light dust or dry particles → Level 1–2
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Liquid splash or low-pressure spray → Level 2–3
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High-pressure spray, hazardous liquids, or infectious risks → Level 4
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Duration of Exposure
Long-term use may require breathable fabrics or ventilation panels to reduce heat buildup, especially in higher-level coveralls. -
Comfort and Mobility
Higher protection levels typically use denser fabrics, which reduce breathability. Look for designs with ergonomic cuts or breathable backs for comfort. -
Additional Features
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Sealed seams or taped seams enhance barrier performance.
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Elastic wrists, ankles, and hoods help prevent liquid entry.
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Antistatic and lint-free materials improve safety in sensitive environments.
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Coverall Levels vs. Other Standards
Besides ANSI/AAMI PB70, other global standards also classify coveralls by performance, such as:
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EN 14126 (for biological hazards)
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EN 14605 / Type 3–4 (for liquid chemical protection)
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EN 13982 / Type 5 (for dry particle protection)
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EN 13034 / Type 6 (for light chemical spray)
While names differ, the concept remains the same: a higher type or level number usually means better protection against liquids or hazardous materials.
How to Get the Most Out of Your Coveralls
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Inspect before each use — check for tears, seam damage, or contamination.
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Choose the right size — poor fit can reduce protection and comfort.
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Combine with appropriate PPE — gloves, respirators, and footwear should match the protection level of your coverall.
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Dispose properly — follow local safety and disposal regulations after use, especially in contaminated environments.
Final Thoughts
Understanding the difference between Level 1 to Level 4 coveralls is essential for selecting the right PPE.
Each level serves a specific purpose — from light-duty tasks to high-risk operations.
The key is to balance protection, comfort, and performance to ensure both safety and efficiency in your workplace.
