Topas DIL 554 — Aerosol Dilution System
The Topas DIL 554 is a static aerosol dilution system engineered for cleanroom and filter test applications. Designed for mobile operation, it enables precise, reproducible dilution of high concentration aerosols down to 1:100 at a fixed flow rate of 28.3 L/min, making it ideal for upstream conditioning of particle measurement instruments.
Typical use cases include validating test aerosols in cleanrooms, enabling measurements of highly concentrated aerosol environments, and ensuring that optical particle counters receive aerosol concentrations within their measurable range.
Key Features & Benefits
- Mobile & autonomous operation — no external compressed air needed; battery powered with optional AC adapter
- Stable dilution performance — maintains constant sample volume flow and predictable dilution even under varying conditions
- Compact, cleanroom-compatible design — stainless steel housing with easy cleaning, low maintenance, and minimal pressure loss (~0.6 kPa)
- Standards compliance — meets the requirements of EN ISO 14644‑3 and VDI standards for cleanroom verification
Typical Applications
- Cleanroom acceptance and qualification
Use in ISO-classified cleanrooms (per DIN ISO 14644 and VDI 2083) to perform acceptance testing and airflow validation. - Filter integrity and penetration testing
Ideal for HEPA/ULPA filter testing, leakage detection, and quality assurance in ventilation or containment systems.
By choosing Topas for aerosol dilution with the DIL 554, operators benefit from precise, reproducible dilution of high-concentration aerosols, ensuring accurate calibration and measurement of particle counters and photometers, while maintaining compliance with ISO and VDI cleanroom standards.