Medical Isolation Gown Selection: EN ISO 13795 Types Explained for Healthcare Buyers

Technical Guide

Why EN ISO 13795 Matters for Gown Procurement

When healthcare facilities source medical isolation gowns, the EN ISO 13795 standard is the single most important specification to verify. This European standard defines performance requirements for single-use and reusable surgical gowns, surgical drapes, and clean air suits used as medical devices. It directly determines whether a gown provides adequate barrier protection against liquid-borne pathogens during medical procedures - and whether it will pass regulatory scrutiny in EU markets.

Procurement teams that overlook the distinction between EN ISO 13795 performance types risk either under-protecting their staff (ordering Type A gowns for high-risk surgery) or overpaying for unnecessary specifications. This guide explains what each type means, how to match it to clinical risk levels, and what material specifications to look for.

1. EN ISO 13795: Standard Overview

EN ISO 13795 replaced the older EN 13795 standard and aligns European requirements with international ISO specifications. The standard covers four critical performance categories:

• Liquid barrier resistance - resistance to penetration by liquids (critical for blood and body fluid exposure)
• Microbial cleanliness - bioburden limits for cleanroom-manufactured products
• Tensile strength - material integrity under stress during donning and use
• Linting - fiber release that could contaminate sterile fields or wounds

Each gown is classified into a performance type based on how it scores across these categories. The type determines the appropriate clinical use case.

2. Performance Types Explained

EN ISO 13795 defines three performance types, each suited to different levels of clinical risk:

Property	Type A (High Performance)	Type B (Moderate Performance)	Type C (Low Performance)
Liquid penetration resistance	Highest - sustained liquid exposure	Moderate - splashes and sprays	Low - minimal liquid contact
Tensile strength (dry)	≥ 40 N	≥ 30 N	≥ 20 N
Tensile strength (wet)	≥ 40 N	≥ 20 N	≥ 10 N
Linting	≤ 4.0 log	≤ 4.0 log	≤ 4.0 log
Typical procedure	Major surgery, trauma, fluid-heavy procedures	General surgery, minor procedures with fluid risk	Routine patient care, basic isolation

3. Material Specifications: SMS Nonwoven

The most common material for single-use medical gowns is SMS (Spunbond-Meltblown-Spunbond) nonwoven fabric. This three-layer construction delivers both strength and barrier protection:

• Spunbond layers (outer and inner): Provide tensile strength, durability, and a comfortable feel against skin or scrubs.
• Meltblown middle layer: The filtration barrier that blocks liquid and microbial penetration. Its density (measured in gsm) directly correlates with fluid resistance.

Justsun's gown lineup demonstrates how material specs scale with protection level:vel:

Specification	Standard Gown (Blue)	Premium Gown (White)
Material	SMS Nonwoven	SMS Nonwoven 50 gsm
Certification	EN ISO 13795	EN ISO 13795 Type B
Seam construction	Standard sewn seams	Sewn seams with protective tape
Reinforcement	Front panel and sleeves	Elastic cuffs with thumbhole
Closure	Elastic cuffs and waist	Wrap-around back closure
Length	Full-length (shoulders to knees)	145cm extended length

The premium gown's taped seams are a significant upgrade: standard sewn seams have needle holes that can allow liquid wicking, while taped seams seal these penetration paths entirely. For procedures involving sustained fluid exposure, taped seams are not optional - they are a clinical necessity.ity.

4. Matching Gown Type to Clinical Risk

Use this risk-based framework to select the appropriate gown type for your facility's procedures:res:

High-Risk Procedures (Type A or Type B with Taped Seams)

• Major surgery with anticipated fluid volume
• Trauma and emergency procedures
• Orthopedic procedures with irrigation
• Childbirth and cesarean sections
• Pandemic response (known high-contagion pathogens)

Moderate-Risk Procedures (Type B)

• General surgery with minimal fluid
• Minor surgical procedures
• Dental procedures with aerosol generation
• Endoscopy

Low-Risk Settings (Type C)

• Routine patient examination
• Basic isolation precautions
• Visitor protection in low-risk wards
• Non-clinical facility use

5. Construction Details That Matter

Beyond the performance type rating, several construction details determine whether a gown will perform as expected in real clinical use:

• Seam sealing: Sewn seams alone allow liquid wicking through needle holes. Taped or ultrasonically sealed seams provide a continuous barrier. For Type B and above, taped seams should be standard.
• Cuff design: Elastic cuffs alone can ride up during movement. Thumbhole cuffs (as on Justsun's premium gown) anchor the sleeve in place, preventing skin exposure at the wrist during extended procedures.res.
• Back closure: Wrap-around closures with ties provide more secure coverage than tie-back only designs, especially during bending and reaching.
• Length: 145cm extended length (premium gown) ensures coverage from neck to mid-calf for most body sizes. Shorter gowns may leave the lower leg exposed when sitting or bending.
• Reinforcement zones: Front panel and sleeve reinforcement is essential for any procedure where the wearer's front and arms face the contamination source. Unreinforced gowns are acceptable only for Type C low-risk applications.ons.