Varying medical applications may require specific fume extractor configurations

Medical facilities that receive Sentry Air Systems products strive to keep their populations healthy.

Humans being human, though, need different types of medical attention depending upon each individual’s situation.

High-level disinfection of endoscopy instruments

Endoscopy is nonsurgical examination of a person’s digestive tract.

Many instruments used do not tolerate the high heat of sterilization.

Instead, exacting manual protocols and chemical solutions are used to create high-level disinfection of endoscopy instruments.

Several hazardous chemicals available

If cleaning endoscopy instruments is part of your work day, read carefully the safety documentation of the chemicals you use.

The table below collects excerpts concerning respiratory issues gathered from online safety data sheets of some chemicals that may be used in endoscopy instrument cleaning processes.

Acetic peroxide Expected to cause burns to the respiratory tract. Provide general and/or local exhaust ventilation to maintain airborne levels below exposure limits
Sodium hydroxide (NaOH) Product is a corrosive material. May cause respiratory irritation.
Glutaraldehyde Harmful if inhaled. Avoid breathing dust/fumes/gas/mist/ vapors/spray. Ensure good ventilation/exhaust system in the work area. Prevent formation of aerosols (fumes/gases).
Ortho-phthaldehyde May cause irritation of nose, throat and respiratory tract.
Hypochlorite Prolonged contact can cause chronic irritation, pulmonary edema and central nervous system depression. Repeated inhalation exposure may cause impairment of lung function and permanent lung damage.
Peracetic acid Over-exposure by inhalation may cause respiratory irritation. Severe over-exposure can result in death.
Still frame, GI Endoscope Reprocessing training video Source:

Still frame, GI Endoscope Reprocessing training video

It’s important to be aware of potential respiratory hazards because cleaning processes may involve exposure to chemicals in large open basins for significant periods of time.

That’s why a ductless containment hood as an engineering control is a prime component of respiratory protection measures for this work task.

Designated work station

Sentry Air Model 330 Ductless Containment Hood

Our ductless containment hoods, like the Model 330 shown here, pulls respiratory hazards into filters — where they are trapped — while users are provided adequate lighting and good line-of-sight via the unit’s transparent top and sash.

Compact and light weight, the depth of our hoods is 24 inches, which means it can be placed on most standard benches.

It requires no special furniture or pedestals that can have a negative impact on your budget.

A small opening for electrical cords is available for instruments that require power.

Activated carbon filtration traps chemical molecules in the carbon’s tiny pores and crevices.

Activated carbon can also be specially treated to adsorb specific chemical types.

Check out our video on how activated carbon works.

Collodion fumes

Model 300 Portable Fume Extractor in use at a medical facility.

Model 300 Portable Fume Extractor in use at a medical facility.

Collodion is used as an adhesive to adhere electrodes to the body for medical tests and diagnosis.

It is particularly useful when electrodes are attached for long periods of time.

Its ingredients include pyroxylin, ether, and alcohol; it may also contain camphor and castor oil.

A patient information site includes an MSDS for collodion. About ventilation it says:

Sentry Air Model 300 portable fume extractor.

Model 300 Portable Fume Extractor can be configured with both HEPA filtration for particles and activated carbon filtration for chemicals.

“Vapors have anesthetic properties. Early symptoms of exposure may include irritation of the nose and throat, followed by dizziness and drowsiness. Continued exposure may lead to unconsciousness, respiratory failure, and death.

“A system of local and/or general exhaust is recommended to keep employee exposures below the Airborne Exposure Limits. Local exhaust ventilation is generally preferred because it can control the emissions of the contaminant at its source, preventing dispersion of it into the general work area. Please refer to the ACGIH document, Industrial Ventilation, A Manual of Recommended Practices, most recent edition, for details.”

Varied locations

Electrodes may be attached to patients in a medical practice’s exam room, in a hospital ward or in a lab.

Our Model 300 Portable Fume Extractor can be wheeled from location to location.

It’s self-supporting flexible hose can be positioned directly where it is needed to pull hazardous fumes away from both patient and test administrator – who may repeat this task throughout the work week.

Seeking ventilation solutions for medical applications?

Talk with our applications specialists. You can call them at 800.799.4609 or email

You can also reach them via the comment form below.



Collodion Adhesive: Possible Health Effects & Fume Extraction Recommendations


GI Endoscopy Reprocessing

Use of collodion