High-efficiency air filters are critical in industries such as pharmaceuticals, semiconductors, and cleanrooms. To ensure their performance, the most widely used standard in Europe is में 1822.
This article explains EN 1822 in a clear and practical way, including its classification system, परीक्षण के तरीके, और वास्तविक दुनिया के अनुप्रयोग.
1. What Is EN 1822?
में 1822 is a European standard used to evaluate the performance of HEPA and ULPA filters.
It focuses on:
- निस्पंदन दक्षता
- रिसाव का पता लगाना
- सर्वाधिक मर्मज्ञ कण आकार (एमपीपीएस)
👉 The goal is to ensure filters meet strict requirements for high-cleanliness environments.
2. में 1822 वर्गीकरण का तरीका
में 1822 classifies filters based on their efficiency at MPPS:
| कक्षा | क्षमता |
|---|---|
| ई10 | ≥ 85% |
| E11 | ≥ 95% |
| ई12 | ≥ 99.5% |
| एच13 | ≥ 99.95% |
| एच14 | ≥ 99.995% |
| U15-U17 | ≥ 99.9995% और ऊपर दिए गए |
👉 HEPA filters typically fall into H13–H14 classes
👉 ULPA filters go beyond H14
3. Key Concept: एमपीपीएस
The सर्वाधिक मर्मज्ञ कण आकार (एमपीपीएस) is the particle size that is hardest to capture.
- Typically around 0.1–0.3 μm
- Efficiency is lowest at this size
👉 EN 1822 evaluates filters at MPPS to ensure worst-case performance
4. में 1822 Testing Process
The EN 1822 standard includes several test steps:
कदम 1: Determination of MPPS
- Measure efficiency across particle sizes
- Identify the weakest filtration point
कदम 2: Overall Efficiency Test
- Evaluate filter efficiency at MPPS
कदम 3: लीक परीक्षण (स्कैन परीक्षण)
This is the most critical step.
- The filter surface is scanned
- Local leaks are detected
- Ensures no weak points
👉 Even if overall efficiency is high, a local leak can cause failure
5. Why Leak Testing Is Critical
Unlike general ventilation filters, HEPA filters must:
✔ Provide uniform performance
✔ Have no local defects
✔ Meet strict cleanroom requirements
👉 A single leak can compromise the entire system
6. में 1822 vs Other Standards
Compared to आईएसओ 16890:
- में 1822 → High-efficiency filters (हेपा/यूएलपीए)
- आईएसओ 16890 → General ventilation filters
👉 EN 1822 is much stricter and more detailed
7. Applications of EN 1822 Filters
EN 1822-tested filters are widely used in:
- फार्मास्युटिकल क्लीनरूम
- सेमीकंडक्टर निर्माण
- अस्पताल और स्वास्थ्य सुविधाएं
- Aerospace and precision industries
👉 These applications require extremely clean air
8. Challenges in EN 1822 परीक्षण
व्यवहार में, testing HEPA filters can be challenging:
- Detecting very small leaks
- Maintaining stable aerosol concentration
- Ensuring scanning accuracy
- Avoiding false results
👉 These challenges require specialized testing equipment
9. Recommended Testing Solution
For accurate EN 1822 परीक्षण, especially leak detection, professional equipment is essential.
The SC-L8023 Scanning Filter Tester from SCPUR is designed specifically for HEPA/ULPA filter testing.
प्रमुख लाभ
- उच्च-संवेदनशीलता रिसाव का पता लगाना
- Precise scanning system
- स्थिर एरोसोल पीढ़ी
- विश्वसनीय और दोहराने योग्य परिणाम
👉 Ensures compliance with EN 1822 आवश्यकताएं
10. निष्कर्ष
में 1822 is a critical standard for evaluating HEPA and ULPA filters, ensuring both:
✔ High overall efficiency
✔ Zero local leakage
Understanding this standard is essential for manufacturers and users in high-cleanliness industries.
