LN₂ Cleanroom Fogger FAQ
Use these answers to identify the next technical question—not to replace the current manual, facility protocol or signed quotation.
AP Series and smoke-study questions
What is the difference between AP30 and AP35?
AP30 is an active self-pressurized LN₂ platform. AP35 is a passive dewar-style platform. They are distinct architectures; AP30 is not a universal replacement for AP35.
Which AP Series models are active self-pressurized?
AP30, AP50, AP100 and AP200 are grouped in the current active self-pressurized family.
Which AP Series models are passive dewar-style?
AP35, AP95 and AP175 are grouped in the current passive dewar-style family.
Can an LN₂ fogger certify a cleanroom?
No. The fogger supports qualitative airflow visualization. Certification and compliance depend on the applicable standards, approved protocol, calibrated measurements, qualified personnel and complete evidence.
Why do some Applied Physics product pages show different output values?
The public catalog contains legacy and newer data on some pages. Use the signed quotation, approved product sheet and current manual as the controlling sources.
Can LN₂ fog be used in a positively pressurized isolator?
Potentially, but the exact introduction method must overcome the pressure boundary without creating an artificial jet. Prove the full hose and port configuration before the formal study.
Is visible fog distance fixed?
No. Humidity, temperature, air velocity, output setting, hose losses, lighting and camera sensitivity change visible distance.
Is LN₂ fog safe?
It can be used safely under an approved cryogenic and oxygen-deficiency program. LN₂ can displace oxygen, cause cold injury and create pressure hazards if improperly handled.
What water can AP Series foggers use?
Current public AP Series materials identify DI water, sterile water and WFI. The exact permitted type and handling procedure must be verified in the current model manual.
Does a higher-output model always produce better smoke-study video?
No. Excess fog can obscure direction, hands, surfaces and interventions. Use the lowest output that provides interpretable evidence.
What should be in an RFQ?
Include architecture, room and process, output/runtime requirement, outlets and accessories, LN₂/water/power, safety, documentation, warranty, shipping, training and acceptance criteria.
Does Applied Physics ship worldwide?
Applied Physics supports customers internationally. Destination feasibility, freight, customs, electrical compatibility, Incoterms and local LN₂ supply should be confirmed in the quotation.
Need a model-specific answer?
Use the technical requirement builder to send room dimensions, architecture preference, fog-entry method, LN₂ logistics, utilities and documentation requirements to Applied Physics.
Build a defensible fogger requirement
Send Applied Physics the room, process, utilities, documentation and safety constraints—not just a model number.