Isolation Gown Standards: ASTM F2407 and AAMI PB70 Compared for Buyers

September 9, 2026

Quick Summary: ASTM F2407 and AAMI PB70 are the two standards that define how medical gowns are specified and classified. ASTM F2407 sets the construction and performance requirements for surgical gowns, while AAMI PB70 assigns a liquid barrier level from 1 to 4 using standardized test methods. Buyers who understand both can read a gown specification sheet with confidence and match protection to the actual task.

Isolation Gown Standards: ASTM F2407 and AAMI PB70 Compared

A clinic manager comparing isolation gowns online sees phrases like "ASTM F2407 compliant" and "AAMI PB70 Level 2" in nearly every product description. The two acronyms are often used interchangeably, but they describe different layers of the same product story. ASTM F2407 tells you what a surgical gown is and how it should be made; AAMI PB70 tells you how much liquid barrier protection a specific gown provides. Knowing the difference helps buyers compare products fairly and buy the right level for each task.

This article explains what each standard covers, how the liquid barrier levels are tested, and how Canadian facilities can use both when purchasing gowns for daily care, dental procedures and veterinary work.

What ASTM F2407 Actually Covers

ASTM F2407 is a specification standard titled "Standard Specification for Surgical Gowns Intended for Use in Healthcare Facilities." It establishes the baseline requirements for gowns: materials, construction, labelling, packaging, and the test methods used to evaluate properties such as seam strength, lint generation and liquid barrier performance.

Think of ASTM F2407 as the design and quality contract between the manufacturer and the buyer. It defines what a gown must do structurally so that end users can rely on consistent manufacturing. The standard references test methods for evaluating the gown's resistance to liquid penetration, but it does not itself rank gowns into protection levels — that is where AAMI PB70 enters the picture.

What AAMI PB70 Adds: The Level System

AAMI PB70 is the classification standard for the liquid barrier performance of gowns and drapes. It divides products into four levels based on how they perform in standardized laboratory challenges:

Level 1 — minimal barrier; suitable for basic care with low fluid exposure.
Level 2 — low to moderate barrier; for tasks with some splash or spray risk.
Level 3 — moderate to high barrier; for procedures with substantial fluid exposure.
Level 4 — highest barrier; for procedures where large volumes of fluid and bloodborne pathogen exposure are possible.

Each level is tied to specific test methods. Lower levels rely on water resistance tests such as hydrostatic pressure; higher levels add synthetic blood penetration tests. The result is a simple, comparable number — Level 1, 2, 3 or 4 — that buyers can use across brands.

How the Barrier Levels Are Tested

Understanding the tests behind the level helps buyers interpret claims. AAMI PB70 uses methods such as:

Hydrostatic pressure testing, which presses water against the fabric to measure resistance to water penetration under increasing pressure.
Impact penetration testing, which simulates splashes of liquid striking the fabric.
Bloodborne pathogen barrier testing — ASTM F1670 for synthetic blood penetration and ASTM F1671 for resistance to bloodborne pathogens using a surrogate virus.

Level 4 gowns must pass the most demanding of these challenges. Levels 1 through 3 are assigned using water-based challenges, while Level 4 adds the bloodborne pathogen barrier requirement. This is why Level 4 gowns are specified for surgical and high-exposure environments rather than routine contact care.

CliniEco disposable isolation gowns with fluid-resistant non-woven material

How the Two Standards Work Together

In practice, a gown specification sheet usually lists both. The ASTM F2407 designation confirms the product is built to the surgical gown specification, and the AAMI PB70 level tells you which liquid barrier class it meets. Together they answer two questions: "Is this product a properly specified gown?" and "How much protection does it offer?"

Question	Answered By	What It Tells the Buyer
What is this product?	ASTM F2407	Construction, materials, labelling and test requirements for surgical gowns
How much fluid protection?	AAMI PB70	Level 1 to 4 liquid barrier classification
Can I compare brands?	Both, used together	Common language for spec and barrier level
Which level do I need?	Task risk assessment	Match level to anticipated exposure, not to brand claims

For example, a Level 2 SMMS gown used in a dental clinic during procedures with splash potential carries both designations on its technical sheet: ASTM F2407 for the specification and AAMI PB70 Level 2 for the barrier class. A buyer comparing it to a Level 3 gown can see immediately that the level difference represents a step up in fluid resistance, and can judge whether that step is needed for the procedure mix.

Which Level for Which Task?

Selecting the right level starts with a task risk assessment, not with the highest number available. Routine exam room contact, blood draws and standard patient care typically call for Level 1 or 2. Procedures with irrigation, suction or splash — dental surgery, wound irrigation, veterinary procedures — generally warrant Level 2 or 3. High-fluid surgical cases and situations where bloodborne pathogen exposure is substantial justify Level 4.

Canadian facilities should also remember that gown level is one part of a protection program. Gloves, face protection, hand hygiene and safe sharps handling all contribute to worker safety. A Level 4 gown worn with poor glove and doffing technique provides less protection than a properly used Level 2 gown in a matched task.

Reading Gown Labels: What the Print Actually Says

Gown packaging carries a surprising amount of technical text, and not all of it is equally useful at the point of purchase. The product name and the barrier level are the first things to check. A description that says "protective gown" without naming an ASTM F2407 specification or an AAMI PB70 level may be a general-purpose gown that was never tested to a healthcare barrier standard. That distinction matters when a facility is building an infection control program that regulators and inspectors will review.

Material names also appear on labels — SMS, SMMS, PP, non-woven and spunbond are common. These describe how the fabric is made, not how much fluid it blocks. A 40gsm SMS material can be engineered to meet Level 2 while a heavier fabric with a looser structure may not reach Level 1. The barrier level is the property that matters for exposure control; the material name is useful context for comfort, breathability and cost. When a supplier quotes only the fabric weight and not the tested barrier level, ask for the AAMI PB70 test report.

Facilities pursuing sustainability goals can also consider gowns made from compostable materials. A PLA biodegradable Level 1 gown addresses the same barrier level for low-exposure care while reducing plastic waste, though buyers should confirm compostability certifications match their local organics or waste stream.

Breathability is a real consideration for staff who wear gowns through long procedures. Higher barrier levels often use films or tighter constructions that reduce air flow, which can increase heat stress in warm procedure rooms. Some Level 2 and Level 3 gowns balance barrier performance with breathability through SMMS construction, where a melt-blown middle layer provides fluid resistance while the outer spunbond layers keep the garment comfortable. Buyers should test a sample gown under working conditions rather than judging comfort from a specification sheet alone.

Regulatory Status in Canada

Isolation gowns and surgical gowns are medical devices under Health Canada's Medical Devices Regulations. Depending on the class and import status, the product and the importing establishment must hold the appropriate authorization. Buyers should verify that the supplier can document its Health Canada licensing, and should request the technical file data showing the gown's standard compliance and barrier level.

The presence of ASTM or AAMI language on a label does not by itself prove regulatory status. A responsible supplier can connect the marketing claim to the underlying test report and the licensing documents. CliniEco Medical, for example, holds a medical device establishment licence (MDEL #35334) and provides specification data for its gown products on request.

SMMS level 2 isolation gown material close-up showing fluid-resistant non-woven fabric

A Buyer's Checklist for Gown Standards

Confirm both ASTM F2407 specification and AAMI PB70 level appear on the technical sheet.
Ask which test method produced the level — hydrostatic, impact or bloodborne pathogen barrier.
Match the level to your task risk assessment; buy higher levels only where exposure justifies them.
Verify the supplier's Health Canada medical device authorization.
Request a sample to check seam strength, sizing and material hand before committing to bulk volume.

For Canadian clinics, long-term care homes and veterinary practices, a practical option is a SMMS 40gsm Level 2 isolation gown that combines moderate fluid resistance with comfort for daily wear, or a non-woven fluid-resistant Level 1 gown for lower-exposure contact care.

Frequently Asked Questions

What is ASTM F2407?

ASTM F2407 is a standard specification for surgical gowns used in healthcare facilities. It sets minimum design and performance requirements, including construction, labeling and test methods, and it is the specification framework within which AAMI PB70 liquid barrier levels are applied.

What is AAMI PB70?

AAMI PB70 is a classification standard that sorts gowns and drapes into four liquid barrier levels based on standardized tests. Level 1 offers the least protection and Level 4 the most. The level tells a buyer how much fluid resistance a gown is designed to provide, not the material composition.

How are AAMI PB70 levels measured?

Each level is measured with standardized test methods: hydrostatic pressure for water resistance, impact penetration for splash resistance, and bloodborne pathogen barrier tests such as ASTM F1670 and ASTM F1671 for higher levels. Higher levels must pass progressively more demanding challenges.

Do all isolation gowns need to be AAMI Level 3 or 4?

No. The appropriate level depends on the task and the anticipated exposure. Level 1 gowns suit basic care with minimal fluid contact, Level 2 suits moderate splash risk, and Level 3 or 4 is reserved for procedures with substantial fluid exposure. Selecting a level above the task need is unnecessary cost.

Are ASTM F2407 and AAMI PB70 the same standard?

They work together but are not the same. ASTM F2407 is a specification that defines what a surgical gown is and sets requirements for construction, labeling and testing. AAMI PB70 is a classification that assigns a liquid barrier level using specific test methods. A gown is usually described by both its specification and its PB70 level.

Are isolation gowns regulated in Canada?

Gowns sold as medical devices for healthcare use fall under Health Canada's Medical Devices Regulations. They must have a medical device licence or establishment licence depending on class and import status. Buyers should confirm that the supplier holds the appropriate Health Canada authorization.

Can I use ASTM F2407 data to compare gowns from different suppliers?

Yes, when the data is produced under the same test conditions. ASTM F2407 provides a common framework, and AAMI PB70 provides a common level language, so a Level 2 gown from one manufacturer can be compared with a Level 2 gown from another on the barrier property. Other properties such as comfort and breathability are not captured by the level.

Where can Canadian facilities buy compliant isolation gowns?

CliniEco Medical supplies SMMS 40gsm Level 2 protective gowns and non-woven fluid-resistant gowns with bulk pricing for Canadian clinics, long-term care homes and veterinary practices. A procurement specialist can confirm the gown level and available sizes for your facility's needs.

Also read: compare isolation gown standards (ASTM F2407 vs AAMI PB70) in our pillar guide.