Applied Physics · Precision technologies since 1992
Smoke Studies and Airflow Visualization Study | Type of Fog Produced | Visual Fog Volume | Approximate Milli-liters of Liquid converted to Fog / Minute | Typical Visible Fog Time (dependent on fog velocity, fog volume and room humidity) | Typical Fog Distance | What Liquids are Used | Typical Shipping Dimensions of main Box | Accessories | Power Connections |
|---|---|---|---|---|---|---|---|---|---|
CRF2-H Portable Cleanroom Fogger | Low-cost, 9 ultrasonic piezos, single 60mm fog outlet, pure fog output, polyethylene enclosure. Used in fume hood, small glove box, small airflow hood. | about 0.28 cubic meters / minute | About 50 ml liquid converted to fog each minute (fog density) using 9 ultrasonic piezo devices. | typical, 45 minutes | Typical 6-7 feet visual fog airflow | De-ionized Water, Sterile Water or WFI (Water for Injection) Water. | CRF2-H ships in box, or optionally in a 33x28x17" Rolling Carry Case. 4 optional accessories. | 1) 22" Fog Curtain Wand | Separate Power Supply & Cable, 115 VAC, 60 Hz; 220 VAC, 50 Hz. |
CRF2-J Portable Cleanroom Fogger with 2Mx80mm Fog Hose | Low-cost, 12 ultrasonic piezos, single 80mm fog outlet, pure fog output, polyethylene enclosure. Used in medium glove box, RAB, small BSC, small airflow hood. | about 0.43 cubic meters / minute | About 64 ml liquid converted to fog each minute (fog density) using 12 ultrasonic piezo devices. | typical, 35 minutes | Typical 8-10 feet visual fog airflow | De-ionized Water, Sterile Water or WFI (Water for Injection) Water. | CRF2-J ships in box, or optionally in a 33x28x17" Rolling Carry Case. 12 optional accessories. | 1) 80mm x 0.6 M Fog Wand | Integrated Power Supply & Power Cable, 115 VAC, 60 Hz; 100 VAC, 50 Hz; 220 VAC, 50 Hz. |
CRF3 Portable Cleanroom Fogger | Adjustable control, pure fog output, single 80mm fog outlet, 316L electro-polished brushed stainless steel enclosure with Carry Handles. Used in small BSC, Barrier isolator, RABs, medium glove box smoke studies. | about 0.89 cubic meters / minute | about 133.57 ml liquid converted to fog each minute (fog density) using 25 ultrasonic piezo devices. | typical, 70 minutes at max fog volume | Typical about 10 feet visual fog airflow | De-ionized Water, Sterile Water or WFI (Water for Injection) Water. | CRF3 ships in box, 32 x 18.5 x 19 inches. Accessories in a separate Rolling Carry Cases. | 1) 80mm x 1.2 M Fog Wand | Integrated Power Supply & Power Cable, 115 VAC, 60 Hz; 100 VAC, 50 Hz; 220 VAC, 50 Hz. |
CRF6 Portable Cleanroom Fogger | Adjustable control, pure fog output and DUAL 80mm fog outlets, 316L electro-polished brushed stainless steel enclosure with Carry Handles. Used in medium USC, RAB, Barrier Isolator, small cleanroom or sterile smoke studies. | about 2.4 cubic meters / minute | about 256.3 ml liquid converted to fog each minute (fog density) using 48 ultrasonic piezo devices. | typical, 35 minutes at max fog volume or 50 minutes at lowest fog volume | Typical 12-15 feet visual fog airflow | De-ionized Water, Sterile Water or WFI (Water for Injection) Water. | CRF6 ships in box, 32 x 18.5 x 19 inches. Accessories in a separate Rolling Carry Cases. | 1) 80mm x 1.2 M Fog Wand | Integrated Power Supply & Power Cable, 115 VAC, 60 Hz; 100 VAC, 50 Hz; 220 VAC, 50 Hz. |
AP35 Portable Cleanroom Ultrapure Fogger | Provides a high volume of ultrapure fog using LN2 + (DI, Sterile or WFI) water, packaged in a 316L electro-polished, brushed, stainless steel enclosure on rolling SS frame (trolley). Used in smoke studies of large clean rooms and for visual fog in stage acting. | about 5.5 cubic meters / minute | about 571 ml liquid converted to fog each minute (fog density). | Typical 70 minutes | Typical 20-30 feet visual fog airflow | LN2 + De-ionized Water, Sterile Water or WFI (Water for Injection) Water. | AP35 ships in crate: 1.2 M x 1M x 0.8 M. Accessories are in separate rolling carry cases. | 1) 80mm x 1.2 M Fog Wand | Integrated Power Supply & Power Cable, 115 VAC, 60 Hz; 100 VAC, 50 Hz; 220 VAC, 50 Hz. |
AP100 Portable LN2 Fogger | Provides highest volume of ultrapure fog using LN2 + (DI, Sterile or WFI) water, packaged in a 316L electro-polished, brushed, stainless steel enclosure on rolling SS frame (trolley). Used in smoke studies of large clean rooms and for visual fog in stage acting. | about 15.5 cubic meters / minute | about 1520 ml liquid converted to fog each minute (fog density). | Typical 90 minutes | Typical 30-40 feet visual fog airflow | LN2 + De-ionized Water, Sterile Water or WFI (Water for Injection) Water. | AP100 ships in crate: 1.2 M x 1.2 M x 1.2M. Accessories are in separate rolling carry cases. | 1) 80mm x 1.2 M Fog Wand | Integrated Power Supply & Power Cable, 115 VAC, 60 Hz; 100 VAC, 50 Hz; 220 VAC, 50 Hz. |
Ultrapure LN2 Fogger from 2001 era | Medium fog volume. | about 1.5 cubic meters / ultrapure fog minute | about 250ml liquid converted to fog each minute (fog density). | Typical 40 minutes | Typical 10-15 feet visual fog airflow | LN2 + De-ionized Water, Sterile Water or WFI (Water for Injection) Water. | Not Known. | 80mm x 0.6M fog wand. | 115 VAC, 60 Hz; 220 VAC, 50 Hz; 100VAC, 50 Hz. |
CO2 Fogger | Low Cost fogger. For barrier isolators, bio-safety cabinets, fume hoods, glove boxes. | starts at about 0.30 cubic meters / minute, decreasing to 0 volume as CO2 evaporates over 8 minutes | starting at 20 ml / minute, and decreasing to 0 fog density as CO2 ice evaporates to zero. | Typical 8-10 minutes | Typical 4-6 feet visual fog airflow | CO2 ice + De-ionized Water, Sterile Water or WFI (Water for Injection) Water. | CO2 fogger ships in 22 x 22 x 18" Case. | Carry Case | 115 VAC, 60 Hz; 220 VAC, 50 Hz. |
Low Cost, Hand Held, Glycol Fogger | Glycerin liquid and Water. Typically used in industrial and FDA applications. May leave a glycol film on surfaces, unless wiped clean. | about 0.30 cubic meters / minute | about 1.0 to 1.5 ml fog density / minute. | Typical 45 minutes | Typical 10-15 feet visual fog airflow | 10% Glycerin liquid and 90% water, (Sterile, deionized or WFI). | Portable Fogger ships in box, 20 x 18 x 12 inches. All Accessories included in carry case. | Includes all accessories including: | Rechargeable Battery, 115V/220V Charging in 60 Minutes. |
Feature / Fogger | AP30 Ultrapure Fogger | AP50 Ultrapure High-Performance LN₂ Fogging for Airflow Visualization & Validation | AP200 Ultrapure - Maximum Fog Volume for Large-Scale Cleanroom Validation | Other LN₂ Foggers | Alternative Foggers |
|---|---|---|---|---|---|
Fog Volume | 4.3 m³/min | 7.1 m³/min | 28.6 m³/min | 15-20 m³/min | 3.5-10 m³/min |
Fog Purity | 100% Ultrapure LN₂ fog | 100% Ultrapure LN₂ fog | 100% Ultrapure LN₂ fog | Ultrapure LN₂ Fog | Chemical-Based Fog |
Run Time | 60 min | 75 min | 105 min | 60-75 min | 30-50 min |
Residue-Free | Yes | Yes | Yes | Yes | No |
Portable Design | Yes | Yes | Yes | Often Bulkier | Varies |
Used in ISO 14644-3 / GMP smoke-study workflows | Yes | Yes | Yes | Yes | Some |
| Model | Tank/Water Size | # Piezos | Output Size | Fog Output Volume (m³/min) | Water Consumption (ml/min) | Output Distance (Est.) | Notes |
|---|---|---|---|---|---|---|---|
| CRF2-H | 5–10 L | 9 | Single 60mm | 0.26 | 48.1 | — | |
| CRF2-J | 5–10 L | 12 | Single 80mm | 0.56 | 64.1 | — | |
| CRF4 | 20 L | 35 | Single 80mm | 1.25 | 187 | — | |
| Old CRF3 | 9–11 L | 25 | Single 80mm | 0.9 | 133.5 | — | |
| New CRF3 | 9–11 L | 24 | Dual 80mm | 1.2 |
Model | Design / Enclosure | Fog Application | Fog Volume (m3/min) | Duration (min) | Duration Display | Fog View Distance | Fog Outlets | Status | Notes | Accessories | Power / Notes |
|---|---|---|---|---|---|---|---|---|---|---|---|
CRF2-H | Polyethylene enclosure, 9 ultrasonic piezos, single 60mm outlet | Fume hoods, small glove boxes, small airflow hoods | 0.28 | 45 | 45 | 6-7 feet | One 60mm fog outlet | Current | 22" fog curtain wand; 10 ft remote cable; rolling carry case; drain & dry kit | DI / Sterile / WFI water; separate power supply; 115/220 VAC | |
CRF2-J | Polyethylene enclosure, 12 ultrasonic piezos, single 80mm outlet | Medium glove boxes, RABs, small BSCs, small airflow hoods | 0.43 | 35 | 35 | 8-10 feet | One 80mm fog outlet | Current | 0.6M 80mm wand; wireless remote; 2M x 80mm hose; Y/T adaptors; LED light | DI / Sterile / WFI water; integrated power; 115/100/220 VAC | |
2022 CRF3 (Discontinued) | 316L electro-polished stainless enclosure, 25 ultrasonic piezos, single 80mm outlet | Small BSCs, barrier isolators, RABs, medium glove boxes | 0.89 | 70 | 70 | about 10 feet | One 80mm fog outlet | Discontinued | 80mm wand; wireless remote; 5M x 80mm hose; dual 50mm hose set; Y/T adaptors; LED light | DI / Sterile / WFI water; integrated power; 115/100/220 VAC | |
2025 CRF3 (Current) | 316L electro-polished stainless enclosure, 24 ultrasonic piezos, dual 80mm outlets | Small / medium BSCs, barrier isolators, RABs, medium glove boxes | 1 | 62 | 62 | 10-12 feet | Two 80mm fog outlets | Current | Runtime estimated from 2022 CRF3 using inverse fog-volume scaling. | 80mm wand; wireless remote; 5M x 80mm hose; dual 50mm hose set; Y/T adaptors; LED light | DI / Sterile / WFI water; integrated power; 115/100/220 VAC |
Legacy CRF4 | 316L electro-polished stainless enclosure, 35 ultrasonic piezos, single 80mm outlet | Medium BSCs, barrier isolators, RABs, medium cleanroom smoke studies | 1.4 | 45 | 45 | 12-15 feet | One 80mm fog outlet | Discontinued | Runtime estimated from 2022 CRF3 using inverse fog-volume scaling. | 80mm wand; wireless remote; 5M x 80mm hose; dual 50mm hose set; Y/T adaptors; LED light; drain & dry kit | LN2 + DI / Sterile / WFI water; integrated power; 115/100/220 VAC |
2022 CRF6 (Discontinued) | 316L electro-polished stainless enclosure, 40 ultrasonic piezos, dual 80mm outlets | Medium BSCs, RABs, barrier isolators, small cleanrooms, sterile smoke studies | 2 | 35 | 35 | 12-15 feet | Two 80mm fog outlets | Discontinued | 80mm wand; wireless remote; 5M x 80mm hose; dual 50mm hose set; Y/T adaptors; LED light; drain & dry kit | LN2 + DI / Sterile / WFI water; integrated power; 115/100/220 VAC | |
2025 CRF6 (Current) | 316L electro-polished stainless enclosure, 48 ultrasonic piezos, dual 80mm outlets | Medium / large BSCs, RABs, barrier isolators, small cleanrooms, sterile smoke studies | 2.4 | 26 | 26 | 14-17 feet | Two 80mm fog outlets | Current | Runtime estimated from 2022 CRF3 using inverse fog-volume scaling. | 80mm wand; wireless remote; 5M x 80mm hose; dual 50mm hose set; Y/T adaptors; LED light; drain & dry kit | LN2 + DI / Sterile / WFI water; integrated power; 115/100/220 VAC |
AP35 | 316L electro-polished stainless trolley unit, passive/dewar 35L tank, dual heaters, dual 80mm outlets | Small ISO suites, medium barrier isolators, glove boxes | 8.5 | 70 | 70 | 15-20 feet | Two 80mm fog outlets | Current | 80mm wand; wireless remote; 5M x 80mm hose; dual 50mm hose set; Y/T adaptors; LED light; drain & dry kit | LN2 + DI / Sterile / WFI water; integrated power; 115/100/220 VAC | |
AP30 | 316L electro-polished stainless trolley unit, self-pressurized 30L tank, dual heaters, dual 80mm outlets | Small ISO suites, medium barrier isolators, glove boxes | 7.4 | 60 | 60 | 15-20 feet | Two 80mm fog outlets | Current | 80mm wand; wireless remote; 5M x 80mm hose; dual 50mm hose set; Y/T adaptors; LED light; drain & dry kit | LN2 + DI / Sterile / WFI water; integrated power; 115/100/220 VAC | |
AP50 | 316L electro-polished stainless trolley unit, self-pressurized 50L tank, dual heaters, dual 80mm outlets | Small / medium ISO suites, medium barrier isolators, glove boxes | 12.2 | 75 | 75 | 18-22 feet | Two 80mm fog outlets | Current | 80mm wand; wireless remote; 5M x 80mm hose; dual 50mm hose set; Y/T adaptors; LED light; drain & dry kit | LN2 + DI / Sterile / WFI water; integrated power; 115/100/220 VAC | |
AP95 | 316L electro-polished stainless trolley unit, passive 95L tank platform, dual heaters, dual 80mm outlets | Medium / large ISO suites, barrier isolators, large glove boxes, cleanroom airflow validation | 15.2 | 89 | 89 | 18-21 feet | Two 80mm fog outlets | Current | Passive 95L estimate aligned to corrected AP-family baseline logic. | 80mm wand; wireless remote; 5M x 80mm hose; dual 50mm hose set; Y/T adaptors; LED light; drain & dry kit | LN2 + DI / Sterile / WFI water; integrated power; 115/100/220 VAC |
AP100 | 316L electro-polished stainless trolley unit, self-pressurized 100L tank, dual heaters, dual 80mm outlets | Medium / large ISO suites, barrier isolators, large glove boxes and BSCs | 20.5 | 90 | 90 | 22-26 feet | Two 80mm fog outlets | Current | 80mm wand; wireless remote; 5M x 80mm hose; dual 50mm hose set; Y/T adaptors; LED light; drain & dry kit | LN2 + DI / Sterile / WFI water; integrated power; 115/100/220 VAC | |
AP175 | 316L electro-polished stainless trolley unit, passive 175L tank platform, dual heaters, dual 80mm outlets | Large ISO suites, large cleanrooms, large barrier isolators, large-scale airflow validation | 28 | 101 | 101 | 24-27 feet | Two 80mm fog outlets | Current | Passive 175L extrapolated from corrected AP-family baseline logic. | 80mm wand; wireless remote; 5M x 80mm hose; dual 50mm hose set; Y/T adaptors; LED light; drain & dry kit | LN2 + DI / Sterile / WFI water; integrated power; 115/100/220 VAC |
AP200 | 316L electro-polished stainless trolley unit, self-pressurized 200L tank, dual heaters, dual 80mm outlets | Large ISO suites, large cleanrooms, large barrier isolators, large-scale airflow validation | 49 | 105 | 105 | 33-37 feet | Two 80mm fog outlets | Current | Distance shown marketing-forward from corrected 200L projection. | 80mm wand; wireless remote; 5M x 80mm hose; dual 50mm hose set; Y/T adaptors; LED light; drain & dry kit | LN2 + DI / Sterile / WFI water; integrated power; 115/100/220 VAC |
Current Applied Physics Fogger Family
Use this matrix as a starting point. Product selection should follow the current quoted configuration and the actual study geometry; restrictive delivery paths should never be sized from a room-volume or free-air figure alone.
| Model | Technology | Best starting point | Selection status / fact |
|---|---|---|---|
| CRF2 | Ultrasonic | Localized studies, hoods, small enclosures | Compact current CRF platform; confirm the quoted product sheet. |
| CRF3 | Ultrasonic | Mid-range cleanroom / enclosure studies | Mid-range current CRF platform; confirm the quoted product sheet. |
| CRF6 | Ultrasonic | Higher-output portable ultrasonic studies | 48 piezos · dual 80 mm outlets · ≈2.4 m³/min · 7-inch HD display. |
| AP35 | LN₂ · passive/dewar | 35 L passive/dewar AP Series option | Current passive/dewar architecture. |
| AP30 | LN₂ · self-pressurized | Compact self-pressurized AP Series option | Current self-pressurized architecture; not a replacement for AP35. |
| AP50 | LN₂ · self-pressurized | Intermediate self-pressurized AP Series option | Current self-pressurized platform; confirm quoted performance. |
| AP95 | LN₂ · passive/dewar | Higher-capacity passive/dewar AP option | Current passive/dewar platform; confirm quoted performance. |
| AP175 | LN₂ · passive/dewar | Largest passive/dewar AP Series option | Current passive/dewar platform; confirm quoted performance. |
| AP100 | LN₂ · self-pressurized | Higher-capacity self-pressurized AP option | Current self-pressurized platform. |
| AP200 | LN₂ · self-pressurized | Largest self-pressurized AP Series option | Current self-pressurized platform for larger-scale planning. |
AP Series architecture note:
AP Series LN₂ foggers are offered in two current architecture families. Self-pressurized models include AP30, AP50, AP100 and AP200. Passive/dewar-style models include AP35, AP95 and AP175. Choose the architecture from the application, handling preference, study duration and fog-delivery path rather than treating one architecture as the successor to the other.
Delivered fog matters more than free-air output.
Hose length, diameter, bends, Y/T adapters, a restrictive injection port and enclosure pressure can all reduce or redistribute the fog that actually reaches the test area. For isolators and RABS, evaluate the intended delivery path under representative pressure conditions.
The quote should identify the actual application, enclosure/room dimensions, pressure relationship, hose/port geometry and study objective so Applied Physics can recommend the appropriate configuration.
Technology Selection
CRF2, CRF3 and CRF6 generate visible fog ultrasonically from the appropriate water supply. The family spans compact localized studies through the confirmed high-output CRF6.
The current AP Series is organized by architecture: self-pressurized AP30, AP50, AP100 and AP200, and passive/dewar AP35, AP95 and AP175. Select between architectures based on the actual study and handling requirement.
Delivered fog matters more than free-air output.
Hose length, diameter, bends, Y/T adapters, a restrictive injection port and enclosure pressure can all reduce or redistribute the fog that actually reaches the test area. For isolators and RABS, evaluate the intended delivery path under representative pressure conditions.
Fogger Sizing · Application First
Room or enclosure volume is useful context, but it does not describe the resistance between the fogger and the point where the tracer must be visible. The sizing decision should capture the complete delivery path and the evidence the study needs to produce.
Delivered fog matters more than free-air output.
Hose length, diameter, bends, Y/T adapters, a restrictive injection port and enclosure pressure can all reduce or redistribute the fog that actually reaches the test area. For isolators and RABS, evaluate the intended delivery path under representative pressure conditions.
Two outlets into one hose?
Combining two fogger outlets through a reverse Y into a single downstream hose can add restriction and backpressure. Where practical, preserve separate delivery paths or use a manifold/downstream line sized for the combined flow. If a combined line is required, validate that exact hose and enclosure configuration before the formal study.
Fog Delivery Accessories
The same fogger can behave very differently depending on how the fog is delivered. The accessory plan should support visibility without creating a tracer jet that overpowers the airflow being observed.
Use the shortest practical route and avoid unnecessary reductions. Long flexible runs and small downstream diameters increase resistance.
Use a wand, curtain or diffuser when the study needs fog distributed across a wider region or introduced at lower local momentum.
Use splitters to serve multiple injection points only after considering the resulting balance and restriction. Valved branches can help tune the distribution.
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