ATI 6D Portable Aerosol Generator with Integrated Compressor

Overview

The ATI 6D Portable Aerosol Generator is a self-contained, compressor-integrated, Raskin-nozzle-based aerosol generation system engineered for precision filter integrity testing in controlled environments. It operates on the principle of pneumatic atomization—using compressed air to shear liquid test agents (e.g., PAO-4, DOP, or polyalphaolefin oils) into a stable, polydisperse aerosol cloud with a mass median aerodynamic diameter (MMAD) typically centered around 0.3–0.5 µm. This particle size distribution is specifically selected to challenge high-efficiency particulate air (HEPA) and ultra-low penetration air (ULPA) filters per ISO 14644-3, IEST-RP-CC001, and EN 1822 test protocols. Designed for field-deployable validation workflows, the 6D delivers consistent aerosol output across airflow ranges from 200 to 2000 CFM (56.6–566 m³/h), making it suitable for qualification of laminar flow hoods, biosafety cabinets (BSCs), fume hoods, ceiling-mounted filter modules, and cleanroom supply ducts.

Key Features

• Integrated oil-lubricated rotary vane compressor—eliminates dependency on external air sources and ensures stable nozzle pressure at 20 psi (138 kPa), calibrated via built-in pressure gauge per ASTM F50-22 requirements.
• Raskin-type dual-orifice nozzle assembly optimized for reproducible submicron aerosol generation with low coefficient of variation (<5% particle concentration drift over 30 min).
• Transparent liquid-level sight glass with graduated scale and bottom-mounted drain valve for rapid reagent replenishment and residue removal between tests.
• Compact, ruggedized chassis with reinforced polymer housing, integrated power cord storage compartment, and ergonomic carrying handle—certified to IP54 ingress protection rating.
• CE-marked and compliant with UL 61010-1 and IEC 61000-6-3 for electromagnetic compatibility and electrical safety in laboratory and industrial settings.
• Optional accessories include positive-pressure injection pump kit (for pressurized duct testing), sanitary tri-clamp and NPT adapter sets, and heavy-duty wheeled transit case compatible with ATI 4B, 4B Lite, and 6D units.

Sample Compatibility & Compliance

The 6D supports common aerosol test agents including polyalphaolefin (PAO-4), dioctyl phthalate (DOP), and polyethylene glycol (PEG) solutions—compatible with gravimetric, photometric (e.g., TSI 8130A), and condensation particle counter (CPC)-based detection systems. Its output profile meets ISO 21501-4 for particle size calibration traceability and supports compliance with FDA 21 CFR Part 11 when paired with validated data acquisition software. The unit is routinely deployed in GMP-regulated pharmaceutical manufacturing facilities, ISO Class 5–8 cleanrooms, BSL-2/3 laboratories, and HVAC commissioning projects requiring adherence to EU GMP Annex 1 (2022), USP , and ASHRAE Standard 140.

Software & Data Management

While the 6D operates as a standalone hardware generator, its aerosol output is fully interoperable with third-party validation platforms such as TSI’s FMS software, Particle Measuring Systems’ AeroTrak suite, and Camfil’s FilterScan system. When used in conjunction with audit-trail-enabled instruments, it supports ALCOA+ data integrity principles—including attributable, legible, contemporaneous, original, and accurate records. No proprietary firmware or embedded software resides on the 6D; all operational parameters (e.g., run time, pressure setpoint, fluid volume consumed) are manually logged per facility SOPs or captured externally via calibrated transducers.

Applications

• HEPA/ULPA filter leak testing in pharmaceutical isolators and aseptic processing suites
• Performance verification of biological safety cabinets (NSF/ANSI 49) and chemical fume hoods (ASHRAE 110)
• Commissioning and routine requalification of cleanroom supply air systems
• In-situ challenge testing of terminal filters in HVAC ductwork under both negative- and positive-pressure conditions
• Training and competency assessment for environmental monitoring personnel per ISO/IEC 17025 competency requirements
• Supporting risk-based validation strategies aligned with ICH Q9 and Annex 15

FAQ

Does the ATI 6D require an external air supply?

No—it contains a built-in compressor rated for continuous operation at 20 psi; only a standard 120 VAC / 60 Hz power source is required.
What aerosol agents are compatible with the 6D?

PAO-4 (polyalphaolefin), DOP, and PEG-400 are commonly used; always verify agent compatibility with your downstream detector and regulatory scope.
Can the 6D be used for positive-pressure duct testing?

Yes—when equipped with the optional positive-pressure injection pump and NPT/tri-clamp adapters, it enables upstream aerosol introduction into pressurized systems.
Is the 6D suitable for ISO Class 5 cleanroom certification?

Yes—its stable submicron output and pressure control meet the aerosol challenge requirements specified in ISO 14644-3 Annex B for Class 5–8 environments.
How often does the compressor oil need replacement?

Per ATI maintenance guidelines, compressor oil should be replaced every 500 operating hours or annually—whichever occurs first—to maintain consistent pressure regulation and aerosol stability.