The Best Hydrogen Fluoride Gas Detector (handheld)

HF Gas Detector, Hydrogen Fluoride Detector -

The Best Hydrogen Fluoride Gas Detector (handheld)

Hydrogen fluoride gas is a toxic and corrosive gas that requires gas detection to protect workers directly working with it. Most people are likely more familiar with hydrogen fluoride gas's liquid form that readily combines with water to generate hydrofluoric acid, but hydrogen fluoride gas itself is an important gas used in various industrial settings, primarily for manufacturing purposes. It is often used in the production of materials such as refrigerants, herbicides, pharmaceuticals, aluminum, and more.



  • Hydrogen fluoride gas is a toxic and corrosive gas that is associated with a number of hazards
  • Hydrogen fluoride gas detectors are used to detect hydrogen fluoride content in a gas mix or laboratory setting
  • Hydrogen fluoride gas detectors may be useful in applications such as industrial manufacturing and research and development
  • Hydrogen fluoride gas detectors vary largely in price from $100s to $10,000s (depending on sensitivity)
  • It is critical to properly understand the application to ensure correct gas detector selection, range, and the lowest level of detection
  • Measuring hydrogen fluoride gas requires the use of a specialized detector

What is the Best Hydrogen Fluoride Gas Detector?

Hydrogen fluoride gas detectors are used in the pharmaceutical, petrochemical and the plastic manufacturing industry. Several reputable Hydrogen Fluoride Gas Detectors include:

How do you Test for Hydrogen Fluoride?

Although hydrogen fluoride can be detected by scent (it has odor threshold for humans -  detection limit of about 0.04 to 0.13 ppm), only an hydrogen fluoride gas detector can correctly determine the gas's quantities in air for human exposure protection. A fixed or portable ppm hydrogen fluoride gas detection system can be used to provide this measurement and safe guard.

What is Hydrogen Fluoride Gas Used For?

Hydrogen fluoride gas has many applications. Frequently, it is used in the production of other materials such as:

  • Refrigerants
  • Herbicides
  • Pharmaceuticals
  • Plastics
  • Aluminum

Hydrogen fluoride  liquid may be combined with water to form hydrofluoric acid, which has a variety applications and an important feed stock to many industrial processes.

How is Hydrogen Fluoride Gas Detected?

Although hydrogen fluoride gas can sometimes be identified by smell, using a hydrogen fluoride gas detection system is highly advisable for more accurate detection of the gas. Human nose sensitivies vary and can be fatigued.

A hydrogen fluoride gas detector can be either fixed or portable and will measure an accurate concentration of hydrogen fluoride gas in the parts per million range (ppm). 

What is Hydrogen Fluoride Gas?

Hydrogen fluoride gas is the gaseous form of a chemical denoted by the chemical symbol, HF. As a gas, it is colorless. It may be released as a product or by-product when fluoride-containing chemical compounds are combined with water. It is known to be both toxic and corrosive, both of which can cause considerable damage to people and certain objects exposed.

Is Hydrogen Fluoride Gas Hazardous?

Hydrogen fluoride gas is hazardous. While it may not be as outwardly dangerous as its liquid form, it can still cause negative health effects to those exposed. Such symptoms of exposure may include the following:

  • Irritation of the eyes
  • Irritation of the nose
  • Irritation of the respiratory tract
  • Irregular heartbeat
  • Fluid buildup in the lungs

Inhalation of high levels of hydrogen fluoride gas can be particularly dangerous, especially if it is in combination with skin exposure to liquid hydrogen fluoride. In these cases, death can occur.

How Do You Select a Hydrogen Fluoride Gas Detector?

When selecting a hydrogen fluoride gas detector, it is necessary to consider how the device will be used-- will it be positioned in one place for a sustained duration of time or required to be portable and mounted on an employee?

For devices intended to move with employees, a portable hydrogen fluoride gas detector may be best. Such devices are often designed to be easily held by the user or even affixed to an article of clothing such as a belt. Typically, they are battery-operated to allow for greater flexibility in movement.

Who Uses a Hydrogen Fluoride Gas Detector?

Most often, those working in an industrial production facility will find the most use for a hydrogen fluoride gas detector. These individuals may be exposed to processes involving hydrogen fluoride gas to manufacture certain items, depending on what the focus of that production facility is.

Certain items manufactured using hydrogen fluoride gas include:

  • Refrigerants
  • Herbicides
  • Pharmaceuticals
  • And more

Furthermore, scientific researchers may also find a use for a hydrogen fluoride gas detector if they are using hydrogen fluoride gas to study chemical reactions. Due to this, hydrogen fluoride gas detectors may also be found in research and development settings.

Is Hydrogen Fluoride Gas Often Used in Refrigerants?

Hydrogen fluoride is used to produce refrigerants. In fact, 60% of hydrogen fluoride used in industrial manufacturing goes toward producing refrigerants to be used in refrigeration, freezing, and air conditioning systems.

How is a Hydrogen Fluoride Gas Sensor Calibrated?

There are no HF standards for compressed gas cylinders that make calibrating HF detector tricky.

Other oxidizing gases such as HCl, NO2, O3 and CL2 can be used to calibrate HF detectors. A chlorine gas standard is typically used to calibrate a HF gas sensor. 

Typical cross sensitivity data of a HF sensor is here:

Is Hydrogen Fluoride Gas Corrosive?


Hydrogen fluoride is both extremely toxic and extremely corrosive in both its gaseous and liquid forms. Because of this, consistent monitoring is key to reducing the risk of harm to people.

What is Hydrogen Fluoride Gas Monitoring?

Hydrogen fluoride gas monitoring is the practice of continually measuring concentrations of hydrogen fluoride gas in a given area. This can help to prevent inadvertent accidents and injuries. Typically, this is accomplished with a fixed hydrogen fluoride gas detector to continuously monitor a specific area.

What Industries Readily Use Hydrogen Fluoride Gas Detectors?

Industries that employ hydrogen fluoride gas in their manufacturing processes readily use hydrogen fluoride gas detectors. While not exhaustive, the following list outlines some of the most common of such manufacturing industries:

  • Chemical
  • Oil
  • Gas
  • Semiconductor
  • Pharmaceutical

How Does a Hydrogen Fluoride Gas Detector Work?

Hydrogen fluoride gas detectors all function using the same basic principle. There is a sensor present that senses when hydrogen fluoride gas is present as well as how much is present. This sensor then passes this information to the display system that gives the output to the user in ppm.

Have Any Hazardous Accidents Occurred Because of Hydrogen Fluoride Gas?

Tragic accidents have occurred because of hydrogen fluoride in the past, however, most of these have been attributable to its liquid form. 

One specific accident occurred in Australia, where a lab technician passed away after being directly exposed to hydrofluoric acid, the combination of hydrogen fluoride and water.

Can You Inhale Hydrogen Fluoride?


As a gaseous compound, hydrogen fluoride can be inhaled. Inhalation can irritate the lungs and present dangers if inhaled in larger quantities. When lots of hydrogen fluoride is inhaled, it may cause pulmonary edema in the lungs. This typically requires urgent medical attention.

How is Hydrogen Fluoride Gas Contained?

Hydrogen fluoride gas should be carefully contained and monitored at all times due to the potential harm it can have on others. The CDC advises that it is not stored in the vicinity of bases, acids, and oxidants.

Final Words

  • Hydrogen fluoride gas has the capacity to cause harm to those who may come into prolonged contact with it, both in liquid and gas form
  • Hydrogen fluoride gas has a number of industrial applications, particularly in the production of certain materials such as refrigerants
  • Hydrogen fluoride gas can be detected using a HF gas detector
  • Hydrogen fluoride gas detectors can be expensive
  • They can also be used for the detection of hydrogen fluoride gas around a person or around a room
  • Hydrogen fluoride gas detection is important to reduce the risk of unnecessary exposure to employees involved in manufacturing products using hydrogen fluoride gas

About the Author

Dr. Koz is the President of FORENSICS DETECTORS, where the company operates from the scenic Palos Verdes Peninsula in Los Angeles, California. He is a subject matter expert on gas sensor technology, gas detectors, gas meters, and gas analyzers. He has been designing, building, manufacturing, and testing toxic gas detection systems for over 20 years.

gas detector expert

Every day is a blessing for Dr. Koz. He loves to help customers solve their unique problems. Dr. Koz also loves spending time with his wife and his three children going to the beach, grilling burgers, and having a cold beer. 

Read more about Forensics Detectors here.

Phone: +1 424-341-3886

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