Description

AP95 Ultrapure Cleanroom Fogger – High Volume LN₂ Fogging for Cleanroom Smoke Studies & Airflow Validation

AP95 Ultrapure Fogger for ISO Cleanroom Validation, Airflow Visualization & Smoke Studies

The AP95 Ultrapure Cleanroom Fogger is a high-performance LN₂ fogging system engineered for medium-to-large cleanroom environments, delivering exceptional fog density, extended runtime, and long-range airflow visualization.

Using Applied Physics’ proven ultrapure fogging technology, the AP95 generates a dense, residue-free fog using Liquid Nitrogen (LN₂) and DI / WFI water, enabling precise visualization of airflow patterns, turbulence, dead zones, and contamination pathways in:

• Pharmaceutical cleanrooms (USP <797>, <800>)
• Semiconductor fabrication facilities
• Biotechnology and life sciences environments
• ISO 14644 classified cleanrooms

The AP95 produces ultrapure fog with no residue, no contamination, and no cleanup required, making it ideal for critical environments.

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AP95 Performance Overview

• Fog Output Volume: ≈ 19–20 m³/min
• Fog Density: ≈ 1900–2000 ml/min
• Operating Time: ≈ 85–95 minutes
• Visual Fog Distance: ≈ 25–35 feet
• Fog Outputs: Dual 80mm outlets
• System Type: Dewar-Style LN₂ System

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Dewar-Style LN₂ Fogger – Proven Reliability in Cleanroom Environments

The AP95 utilizes a dewar-style LN₂ system, a time-tested and widely accepted approach for cleanroom smoke studies and airflow visualization.

How Dewar Systems Work

Dewar-style foggers operate using natural LN₂ evaporation, where liquid nitrogen transitions to gas and creates internal pressure used to drive fog production.

This passive process creates a stable and predictable fog generation system without reliance on active pressurization components.

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Benefits of Dewar-Style Systems in Cleanroom Applications

1. Proven, Industry-Trusted Technology

Dewar systems have been used for decades in:

• Pharmaceutical validation environments
• Semiconductor fabs
• Cleanroom certification processes

Their reliability and simplicity make them a trusted standard across regulated industries.

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2. Stable and Predictable Performance

Because dewar systems rely on natural LN₂ behavior, they provide:

• Consistent fog generation under standard operating conditions
• Predictable performance across validation cycles
• Repeatable results for documentation and compliance

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3. Simplicity and Reliability

Dewar systems have:

• Fewer active components
• No mechanical pressurization systems
• Lower system complexity

This results in:

• Reduced maintenance requirements
• Increased system reliability
• Fewer potential failure points during critical testing

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4. Cleanroom Compatibility

Dewar-style systems are well suited for cleanroom environments because they:

• Operate without introducing additional mechanical complexity
• Maintain a clean, controlled fog generation process
• Integrate easily into existing validation protocols

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5. Controlled Fog Output for Validation Work

The passive nature of dewar systems allows for:

• Smooth fog delivery
• Controlled airflow visualization
• Accurate identification of turbulence and dead zones

This is particularly important for:

• ISO 14644 airflow visualization
• USP <797> compliance testing
• GMP validation procedures

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6. Efficient for Medium-to-Large Environments

When properly engineered—as in the AP95—dewar systems can:

• Deliver high fog density
• Maintain extended runtime
• Provide strong visual coverage across larger cleanroom spaces

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Why Dewar Systems Still Matter

While newer technologies exist, dewar-style systems remain widely used because they offer:

• Reliability over complexity
• Consistency over variability
• Proven performance in regulated environments

For many validation teams, this translates to:

• Greater confidence during audits
• Easier repeatability of results
• Reduced operational risk

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AP95 – Optimized Dewar Performance

The AP95 is engineered to maximize the strengths of dewar-style fogging, delivering:

• High fog density (~2000 ml/min)
• Strong airflow visualization (25–35 ft)
• Extended runtime (up to ~95 minutes)
• Dual 80mm outputs for flexible application

This makes it ideal for:

• Medium-to-large cleanroom smoke studies
• Controlled airflow validation
• Repeatable compliance testing

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Applications of the AP95 Fogger

• Cleanroom smoke studies (ISO 14644-3 Annex B7)
• USP <797> airflow verification
• HEPA filter validation
• Laminar flow testing
• Turbulence and dead zone detection
• Airflow pattern mapping
• Semiconductor airflow validation
• Pharmaceutical cleanroom certification

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Fog Density – The Critical Performance Metric

Fog density determines:

• Visibility distance
• Clarity of airflow patterns
• Accuracy of validation results

With ~1900–2000 ml/min, the AP95 provides:

• Long visible airflow paths
• Clear turbulence visualization
• Improved documentation quality
• More accurate airflow modeling

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AP95 vs Other AP Series Foggers

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What Liquids Are Used

• Liquid Nitrogen (LN₂)
• De-ionized Water (DI)
• Sterile Water
• Water for Injection (WFI)

Produces:

• 2–3 micron ultrapure fog
• Zero residue
• Zero contamination
• No cleanup required

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When Should You Choose the AP95?

Choose the AP95 when:

• You need high fog output without moving to AP100
• You are working in medium-to-large cleanrooms
• You require reliable, repeatable validation results
• You want a proven dewar-style system with strong performance

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AP95 – Proven Technology, High Performance

The AP95 combines:

• Proven dewar-style reliability
• High fog density
• Extended runtime
• Strong airflow visualization

It is engineered for teams that need consistent, dependable performance in critical cleanroom validation environments.