Quick Insights : EN 13697 Surface Disinfectant Testing
- EN 13697 is a phase 2 step 2, quantitative test used to evaluate the disinfectant efficacy on non-porous surfaces.
- Test validates the bactericidal, yeasticidal, and fungicidal claims
- En 13697 test method simulates real world contamination scenarios by using carrier surfaces
- EN 13697 is applicable for disinfectant products intended for food, industrial, domestic, and institutional environments.
- Under EN 13697 testing, a disinfectant must achieve at least a 4-log reduction for bactericidal claims and โฅ 3 log reduction for fungicidal/yeasticidal claims
Summary
EN 13697 is a phase 2 step 2 european standard for testing the efficacy of chemical disinfectants on hard, non-porous surfaces. It checks whether a product can reduce bacteria, yeast and fungi under realistic conditions without mechanical cleaning. It verifies bactericidal, yeasticidal and fungicidal performance by mimicking real world contamination conditions.
What Is EN 13697?
EN 13697 is a phase 2 step 2 , quantitative test to evaluate the bactericidal, yeasticidal/fungicidal activity antimicrobial efficacy of chemical disinfectants on non-porous surfaces without mechanical action, meaning disinfectant is not wiped, brushed, or scrubbed during the test.
What is Phase 2 Step 2 Test ?
EN 13697 is a Phase 2, Step 2 test that closely mimics real-world contamination conditions. EN 13697 testing involves the using carrier surfaces to simulate practical contamination, where microorganisms are first applied and dried on the surface, and then challenged with the disinfectant to assess the reduction in microbial load under realistic use conditions.
Why EN 13697 Is More Challenging Than Suspension Testing
- Suspension testing (Phase 2, Step 1) – It evaluates disinfectants in a liquid medium where microorganisms are freely suspended.. This suspension is then directly challenged with the disinfectant product under defined conditions to check its antimicrobial performance.
- Surface testing (Phase 2, Step 2) – In this microorganisms are dried onto non-porous surfaces before being challenged with disinfectant.
Why EN 13697 Surface Disinfectant Testing Matters
Some bacteria and fungi have the ability to survive on inanimate surfaces for days or even weeks, remaining viable and potentially infectious. To address this problem, the first requirement is a product capable of eliminating microorganisms on non-porous surfaces, followed by testing to verify whether that product actually achieves the required reduction under realistic conditions.
EN 13697 test method addresses this concern by testing disinfectants against dried microorganisms on non-porous surfaces, where survival, adhesion, and environmental stress all influence the outcome. This makes the results more relevant for real hygiene risks in healthcare, food, and industrial settings.
Products Commonly Tested Under EN 13697
- Liquid disinfectants
- Sprays intended for use on non-porous surfaces
- Excludes disinfectant wipes
- Designed for products applied without mechanical action (no wiping or scrubbing)
How EN 13697 Surface Disinfectant Testing Works
- A microbial suspension is prepared and mixed with interfering substances
- Test suspension is applied onto a non-porous carrier surface and allowed to dry out
- Disinfectant product is applied for a defined contact time
- After exposure, a neutralizer stops disinfectant action
- Surviving organisms are recovered and counted
- Reduction in microbial count is compared with control sample and results are expressed as log reduction values
Mandatory microorganisms used in EN 13697 Testing
Bacteria
- Staphylococcus aureus
- Pseudomonas aeruginosa
- Enterococcus hirae
- Escherichia coli
Fungi
- Aspergillus brasiliensis
EN 13697 Pass Criteria Explained
- For bactericidal claim – Product needs to demonstrate โฅ4 log reduction in bacterial count
- For yeasticidal/ fungicidal claims – โฅ3 log reduction for fungi/yeasts in microbial load
What Does a 4-Log Reduction Mean?
A 4 log reduction means 99.99% reduction in microbial load
What Does a 3-Log Reduction Mean?
A 3 log reduction means 99.9% reduction in microbial load
Clean Conditions vs Dirty Conditions in EN 13697
EN 13697 uses defined interfering substances to simulate real contamination levels and evaluate disinfectant performance under different soil loads.
Clean Conditions
- 0.3 g/L bovine albumin
- Represents low organic load environments
Dirty Conditions
- 3.0 g/L bovine albumin
- Represents high organic load environments
EN 13697 vs EN 1276 : Quick comparison
| Category | EN 1276 | EN 13697 |
| Claims | Antibacterial | Antibacterial, Antifungal /Yeasticidal |
| Test Phase | Phase 2, Step 1 | Phase 2, Step 2 |
| Mandatory test organisms | Pseudomonas aeruginosa, Escherichia coli, Staphylococcus aureus, Enterococcus hirae | Bacteria: Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Enterococcus hirae Fungi/Yeast: Candida albicans, Aspergillus brasiliensis |
| Scope | Disinfectants and antiseptics intended for food, industrial, domestic and institutional areas | Disinfectants and antiseptics intended for food, industrial, domestic and institutional areas |
| Passing criteria (Log reduction) | โฅ 5 log reduction | โฅ 4 log for bactericidal activity โฅ 3 log for fungicidal/yeasticidal activity |
Also read
How you can prepare for EN 13697 testing
- Firstly understand the scope of EN 13697 – You need to have a fair understanding of test what the standard evaluates, including its scope, the type of products it applies to
- Select realistic contact times – Choose exposure times that reflect real-world use conditions rather than ideal lab scenarios.
- Validate dilution ranges – Ensure the working concentrations are practical and still capable of delivering the required antimicrobial efficacy.
- Consider dirty condition testing early – Organic load can significantly affect performance, so include it in planning to avoid unexpected failures later.
- Conduct pre-screening studies – Run small-scale trials first to identify formulation weaknesses before full EN 13697 validation.
Need support with EN 13697 surface disinfectant testing?
At MIS, we help manufacturers evaluate bactericidal and fungicidal efficacy under practical non-porous surface conditions. Our team supports disinfectant validation in line with EN 13697 test method standard guidelines, providing reliable and scientifically credible results.
To get a quote on EN 13697 testing or any related queries related to surface disinfectant testing, contact our experts now.
FAQs
1. What is EN 13697 used for?
EN 13697 is used to evaluate the bactericidal and fungicidal efficacy of disinfectants on non-porous surfaces under practical conditions.
2. What is the difference between EN 13697 and EN 1276?
EN 1276 is a suspension test, while EN 13697 evaluates disinfectant performance on contaminated non-porous surfaces.
3. Why are dirty conditions important in EN 13697 testing?
Dirty conditions simulate the presence of organic matter that may interfere with disinfectant activity in real-world environments.
4. Is EN 13697 a Phase 2 Step 2 test?
Yes. EN 13697 is a Phase 2 Step 2 quantitative surface test used to evaluate disinfectant efficacy under practical conditions.
5. Why do products pass EN 1276 but fail EN 13697?
EN 13697 is more stringent. In EN 1276, the test is performed in a liquid suspension where the disinfectant is directly mixed and challenged with microorganisms, allowing immediate and uniform contact. Whereas, in EN 13697,microorganisms are first applied onto carrier surfaces and then dried, simulating real-world contamination.
6. Does EN 13697 simulate real-world surface contamination?
Yes.
7. Can EN 13697 evaluate residual antimicrobial activity?
No. EN 13697 measures immediate surface efficacy under defined contact time.
8. What contact times are commonly used in EN 13697?
Typical contact times range from 5 minutes to 30 minutes, depending on the product type and intended application claims.
