Asbestos in Laboratory Equipment: Risks, Regulations and Safe Handling Practices

Why Asbestos Was Common in Laboratory Settings

Asbestos was used often in laboratory equipment due to the mineral’s ability to resist heat. Many labs use heat to test chemicals, grow bacteria, or make new substances. Equipment needs to be safe and steady under these hot conditions.

For decades, asbestos was the answer for protecting equipment and the people wearing it.

One key reason is asbestos does not burn easily. During the 20th century, manufacturers added asbestos to lab equipment as an appealing feature to keep lab workers and equipment safe from fires. Asbestos became a popular material for making things like heat shields, mats, gloves and even fume hood linings.

Another important fact is asbestos was also cheap to use. It’s found in the earth’s soil, and can be acquired through mining.

Asbestos in products is still an issue today due to old products in circulation. Manufacturers often mixed asbestos into plastics, cements or cloth used in labs. These mixed materials could handle the stress of hot tools, open flames or spilled chemicals.

Asbestos use in labs grew because it was strong, heatproof and easy to find.

Lab Equipment Known to Contain Asbestos

Many types of laboratory equipment once used asbestos materials. Asbestos was chosen for its heat resistance, insulation and durability, but it can be dangerous if damaged. Inhaling or swallowing asbestos is linked to several types of cancer, including a cancer of certain tissue linings called mesothelioma.

Fume Hoods and Exhaust Ducts

Fume hoods and exhaust ducts often used asbestos for fireproofing. Old designs included asbestos-lined panels, gaskets or ductwork. These parts help block the spread of heat and confine flammable fumes.

When repairing or removing these hoods, broken pieces can release asbestos dust. Laboratory technicians working on chemical reactions or using electron microscopy equipment such as SEM or TEM could be exposed if asbestos is present.

Fume hoods built before the 1980s are more likely to have asbestos materials. Inspecting seals, joints and baffles for damage is important if the equipment may be original.

Bunsen Burner Pads and Heat Shields

Many laboratories once used asbestos pads under Bunsen burners. These pads protect work surfaces from direct heat or accidental spills.

Asbestos was also common in heat shields placed near open flames, crucibles and other hot objects. These shields absorb high temperatures and prevent burns or fire damage.

Old pads, even if intact, can release fibers if the fibers break apart from the main source of asbestos. When preparing samples for electron microscopy, any damaged or dusty pads should be replaced to avoid exposure.

Key Points:

• Asbestos pads are sometimes gray-white and felt-like.
• Old ceramic heat shields may have asbestos cores.

Centrifuges, Drying Ovens and Incubators

Some centrifuges had asbestos insulation inside their housings or around motors. This insulation keeps parts cool during long runs or stops.

Drying ovens and incubators also used asbestos sheets or cloth as liners, especially in scientific models built before 1980. These liners protect the outer case from heat and keep the temperature steady.

People using this equipment for SEM or TEM sample preparation could disturb asbestos if insulation is loose. Look for signs of wear, such as brittle lining, dust or crumbling pieces.

Checklist for identification:

• Check for labels warning of asbestos.
• Inspect insulation behind panels or under trays.

Glove Boxes and Insulated Work Chambers

Glove boxes used for handling hazardous or sensitive materials sometimes relied on asbestos for safe insulation. Asbestos sheets or gaskets seal joints and viewing windows.

Insulated chambers, used for storing or preparing electron microscopy samples, often needed fire-resistant barriers. Asbestos helps contain heat and block chemical leaks.

If the chamber is old, check seals and lining for fraying, chipped or dusty spots. Touching these worn areas or moving old gloves can release fibers into the air.

Signs of asbestos in insulated chambers:

• Yellowing or frayed cloth in window seals
• Flaking material around hinges or locking mechanisms

Who Was at Risk of Exposure in Laboratory Environments

People working in laboratories can be exposed to asbestos from equipment, building materials or disturbance of old installations. Any time asbestos was used in lab equipment, it could be disturbed enough for sharp fibers to break away and float in the air. The fibers can also attach to the outside of workers’ clothes or equipment and be inhaled or swallowed later.

These fibers can be inhaled or swallowed, which leads to cell irritation and mutation. This can cause cancer or other deadly diseases.

Direct contact and work tasks increased the risk of breathing in or swallowing asbestos fibers.

Scientists, Lab Technicians and Maintenance Workers

During the 20th century, scientists and lab technicians used equipment like Bunsen burners, heat-resistant mats and fume hoods that sometimes contained asbestos parts. Even today, they may come into contact with asbestos when handling old items. Handling or repairing these items could release asbestos dust.

Routine cleaning, changing filters or small repairs are also risky. Opening old cabinets, swapping out gaskets, or fixing heating elements lets asbestos particles escape.

Maintenance workers manage repairs and upkeep for pipes, tiles and insulation. Most of these materials could contain asbestos if installed before the 1980s.

Tasks that cause dust – cutting, sanding or drilling – make it easier to breathe in fibers. Personal protective equipment is not always used, especially in the past.

Key risks:

• Direct handling of asbestos-containing equipment
• Performing repairs on old lab infrastructure
• Cleaning and maintenance inside ductwork or under floors

Educators and Students in Academic Labs

Teachers and students in schools, colleges and universities also face potential asbestos exposure. Science teachers often supervise experiments with decades-old lab setups. These are sometimes equipped with asbestos mats, wire gauzes and insulation.

Students might not know the danger. Handling heated equipment or old lab benches could stir up fibers on surfaces.

Academic researchers sometimes work for long hours with asbestos-lined equipment. They could also accidentally damage materials during experiments.

Common sources for educators and students:

• Fume hoods lined with asbestos
• Hot plates, oven insulation, and bench tops
• Old cement sinks and tiles

Many university buildings installed asbestos during the 20th century for fire protection and soundproofing. Any renovation or construction indoors could disturb these materials, increasing exposure for everyone in the lab.

Construction and HVAC Crews Performing Renovations

When laboratories need remodeling or system upgrades, construction and HVAC workers were and still are at high risk. Renovation activities like tearing out walls, replacing vents, or updating plumbing disturb asbestos inside insulation, panels and ceiling tiles.

Asbestos exposure for construction workers occurs when they remove or drill into materials not always marked as hazardous. If the space is not properly sealed off, dust spreads to nearby areas, putting researchers and staff in the building at risk, too.

Especially in older facilities, removing old heating ducts or installing new air systems releases hidden asbestos. Even simple actions – such as removing floor tiles – could disturb fibers.

Common tasks with high exposure levels:

• Demolishing walls, floors or ceilings
• Installing or repairing ventilation
• Removing or replacing insulation on pipes and equipment

Many crews now follow strict safety rules, but older renovation projects often lacked proper protection or notification.

Health Risks From Lab-Related Asbestos Exposure

Exposure to asbestos in laboratory equipment can cause serious health issues, including cancer. Even short periods of contact with asbestos fibers can be dangerous to workers if precautions are not taken.

The main types of cancer linked to asbestos exposure are mesothelioma, lung cancer and ovarian cancer. Another health risk is asbestosis, which is a lung-scarring disease.

Inhalation of Airborne Fibers During Maintenance or Repair

When laboratory equipment containing asbestos is disturbed, tiny fibers can become airborne. This often happens during cleaning, repair or removal of old equipment. Workers near the area may breathe in these fibers without noticing, because asbestos dust is usually not visible.

Key risks:

• Airborne fibers can stay suspended for hours.
• Simple actions, like opening panels, can release dust.
• Poor ventilation makes the problem worse.

Inhaling these fibers is the main way asbestos enters the body. The other way is swallowing the fibers through the mouth. Unlike larger particles, the thin, sharp fibers can pass deep into the lungs.

Wearing protective masks and using proper ventilation helps reduce the risks. However, fibers can also settle on skin and clothing. This means workers can unknowingly carry fibers home, putting themselves and family members at potential risk.

Mesothelioma and Other Asbestos-Linked Diseases

Asbestos exposure can lead to serious diseases. The most well-known is mesothelioma, a rare cancer that usually affects the lining of the lungs or abdomen. The only cause of this disease is exposure to asbestos, and the cancer is often very aggressive with a low survival length for patients. Symptoms may not show up until decades after exposure.

Other diseases caused by asbestos include:

• Lung cancer
• Asbestosis (scarring of the lungs)
• Pleural plaques (thickening of lung linings)

Symptoms to watch for:

• Shortness of breath
• Persistent cough
• Chest pain

No amount of asbestos exposure is considered safe. Even small levels can cause health problems in some people. Long-term or repeated exposure increases the risk, especially if the work involves handling old or damaged equipment containing asbestos. Regular medical checkups can help detect early signs of disease.

How to Identify and Manage Asbestos in Lab Equipment

Lab workers must watch for damaged or aging materials that may contain asbestos. It is essential to use expert testing services and replace unsafe parts with new, asbestos-free options.

Warning Signs of Aging or Deteriorating Materials

Older lab equipment, especially items made before the late 1980s, may contain asbestos in gaskets, heat shields, wire insulation and bench tops. Following the 1980s, manufacturers stopped using asbestos in lab equipment due to the known health risks and legal issues.

Signs of wear can include:

• Cracks or breaks
• Chips or powdery residue
• Discoloration or fraying
• Loose dust near joints or seams

It is important to monitor these signs regularly. If equipment shows any of these issues, stop using it and keep the area clear. Do not disturb the material further since asbestos fibers become dangerous when they are broken up or made airborne.

Importance of Professional Testing and Abatement

Only trained professionals should test for asbestos because the fibers are hazardous when released. A certified asbestos inspector can collect samples safely and send them to a lab.

Professional testing follows strict safety standards. Results indicate if equipment must be removed, sealed, or left alone. If asbestos is present, abatement professionals follow these steps:

Never try to handle suspected asbestos materials by yourself.

Retrofitting Labs With Safe, Asbestos-Free Materials

Updating older laboratories means replacing asbestos-containing equipment with modern, safe alternatives. Modern lab equipment should not contain asbestos as most manufacturers have stopped using the mineral.

Choose materials labeled asbestos-free and verified by suppliers.

Whenever possible, plan retrofits during scheduled shutdowns to lessen risk. Train staff to identify new safety labels and update equipment logs regularly. This keeps labs safer for everyone using the space.

Legal and Occupational Protections for Lab Workers

Lab workers may face health risks from asbestos in old equipment. Various laws and policies exist to help protect their health, provide legal options, and guide the steps after exposure or diagnosis.

Workers’ Rights to a Safe Environment Under OSHA

The Occupational Safety and Health Administration (OSHA) sets rules to limit asbestos exposure in the workplace. Employers must monitor air quality, label hazards, and provide safety training for all workers. OSHA standards require proper protective equipment, like respirators and special clothing.

Employers also must post warning signs wherever asbestos is present. Workers have the right to report unsafe conditions to OSHA.

Regular medical checkups should be made available to those at risk. All safety plans and exposure records must be made accessible to workers when they ask for them.

Legal Claims for Mesothelioma Caused by Lab Exposure

People who develop mesothelioma from asbestos exposure at work can file legal claims against their employers or the manufacturers responsible for including asbestos in the equipment. Mesothelioma is a rare cancer caused by asbestos exposure. Victims, including the worker’s immediate family, may seek compensation for medical bills, lost wages, and pain and suffering.

Legal options include workers’ compensation, personal injury lawsuits, and claims against asbestos trust funds. Asbestos exposure lawsuits must usually be filed within a certain time after diagnosis, known as the statute of limitations.

Collecting evidence – like lab records, employment history, and medical reports – is important for any claim. Speaking to a lawyer with experience in asbestos cases is recommended before filing a legal claim.

Next Steps After a Diagnosis or Known Exposure

If a worker has been diagnosed with an illness linked to asbestos, or knows they were exposed, certain steps should be taken:

• Seek medical care – A doctor can run tests and begin any treatment needed.
• Notify the employer – Reporting exposure helps ensure safety for others.
• Document exposure – Keep records of equipment, work dates, and any symptoms.
• Contact OSHA if needed for unsafe conditions not addressed by the employer.

A legal or medical professional can offer advice on rights and next actions. Early steps can help protect health and future legal options.

Final Thoughts: Modern Science Shouldn’t Carry Hidden Risks

Laboratories must focus on safety, along with innovation and accuracy. Even today, asbestos risks can be found in old equipment.

Asbestos was once seen as a useful material because it resists heat and chemicals. However, it is now known to be dangerous if it is disturbed and fibers break apart into the air.

It is important for labs to review their equipment inventories. They should look for any tools, machines or building parts that may contain asbestos.

Steps labs can take:

• Train workers to spot possible asbestos hazards.
• Replace or remove outdated equipment safely.
• Work with certified removal professionals.

The table below shows where asbestos might still be found in laboratory settings:

Modern science aims to protect both research and people. Knowledge of older equipment and materials is key to keeping labs safe for everyone.

Frequently Asked Questions About Asbestos in Laboratory Equipment

Laboratories usually hire certified asbestos inspectors to collect samples. These samples are sent to an accredited lab for analysis. Testing may include visual inspections and the use of special microscopes to identify asbestos fibers.

Sources & Author

About the Writer, David Statman

David Statman is a Content Writer for Mesothelioma Guide. He received both his bachelor's and master's in journalism from West Virginia University, and has been in medical publishing since January 2022. He previously worked in sports journalism, primarily reporting on West Virginia sports for a number of publications.

He lives in Delaware with his wife, dog and two cats, and avidly competes as a professional wrestler in the Philadelphia area.