A Guide To Toxic Gas Detectors


A Guide To Toxic Gas Detectors

Many toxic and flammable gases pose a threat to the safety of workers and personnel. Gas leaks are a leading cause for many workplace accidents on the field, and they can be notoriously difficult to detect and pinpoint by ordinary workers. 

To keep workers safe, it is important to have toxic gas detectors installed. These instruments are the only way to accurately identify gas leaks and potential threats within the workplace. Gas detectors can detect and measure the presence of toxic, asphyxiating, as well as combustible gases that may have leaked into the air. This helps to provide opportunities for early warnings and evacuation alerts, preventing workers from exposing themselves to gases that can potentially cause harm to their bodies, or at worst, death.

There are many ways for toxic gases to leak into the air, giving rise to a variety of gas leak detectors you can find in the market. Most gas leak detectors offer detection capability for oxygen, combustibles, and one or more toxic gases, but some also have specific calibrations meant for monitoring single gas hazards.

Here are some reliable gas detection systems that can be applied to any hazardous workplace:



As the smallest portable multi-gas detector in the market, the gx-2009 is designed to be worn comfortably while monitoring for 4 types of toxic gases. It offers simultaneous detection of O2, H2S and CO gases that can be commonly found in dangerous environments. 

The gx-2009 can be easily calibrated with its automatic test and calibration system. Being dustproof and waterproof, its durable design allows it to operate even in the harshest conditions, making it ideal for any workplace.



Newly improved from the RX-51 series, the RX-8700 gas detector is designed to measure multiple gases such as O2, HC and H2S in the air or inert atmospheres. Its dual auto-ranging technology allows the instrument to automatically switch from a 0 – 100% LEL (Lower Explosive Limit) to a 0 – 100% volume range, allowing it to have accurate measurement over target hydrocarbon gases.

Additionally, the RX-8700 has a clear and intuitive digital display to indicate operational information like bump tests and calibration status, making it easy for personnel to conduct onsite auditing.



The CO-O3 is a single gas detector with a robust design and an intrinsic safety rating. It can monitor the levels of CO gases and detect gas leaks all while being worn on the body. With replaceable sensors, filters, and batteries, the CO gas monitor can operate effectively with little room for error, keeping workers and property safe from harmful gas exposure.

Gastec Tubes

Gastec Tubes

Gastec tubes are some of the most effective and efficient single gas detectors you can find in the market. It uses colorimetric technology that will accurately analyze and indicate the concentration of the target gas it is calibrated for. Being easily portable, gastec tubes allow users to carry out onsite screening and sampling of industrial environments to monitor and detect the presence of toxic gases.


Gas detectors provide an effective way of determining the safety of an environment where dangerous goods are present. Most instruments available are user-friendly and extremely reliable when properly calibrated, making them a necessity for protecting lives and property in the workplace.


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Advantages of Using Gastec Tube Detectors

Gastec Tubes

Advantages of Using Gastec Tube Detectors

Advantages of using gastec tube detectors

Gastec tubes are some of the handiest and versatile single gas detection you can find. They can detect the presence of a specific gas in the atmosphere, identifying flammable gases like oxygen and toxic gases like carbon monoxide. These tubes are available for over 300 different types of gases. They are easy to use in personal exposure monitoring and area sampling.

Uses Of Gastec Tube Single Gas Detectors

Gastec tubes can be used in a variety of applications. Most commonly, they can be used in environments requiring:

  • Identification of unknown gases
  • Analyzing the quality of breathing air
  • Spot sampling of gases at a site
  • Measuring time-weighted average (TWA) personal exposures

Gastec tubes consist of a sealed glass tube containing a chemical reagent that absorbs and reacts with the target gas being measured. A color change then occurs, indicating the target gas concentration. This can be read alongside the pinpoint accurate measurement scale on the tube.

Advantages Of Using Gastec Tube Detectors Over Other Gas Detector Devices

Though gastec tubes may be a traditional method of gas measurement, the technology it uses still makes them reliable detectors that can rival the accuracy of other LEL gas detectors.

Gastec tubes are continuously being developed for new applications and are available for all gas types and concentrations that may not be detected by other gas detection technologies.

For instance, multi-gas detectors have sensors that can be influenced by external environmental factors like temperature, humidity, and the presence of coexisting gases. This can result in unreliable detection of certain dangerous gases, causing safety endangerment of personnel on the site.

Another benefit of O2 gas detectors is that they are pre-calibrated. Easily portable and lightweight, they can be used on the field immediately without the need for calibration, making them a low-cost measurement device.

Being compact, gastec tubes can be easily stored in a box when not in use. As long as they are kept in a cool and dark environment, gastec tubes do not require servicing and can last up to three years from the manufactured date. They are excellent measurement tools to have during an emergency.

How To Use Gastec Tubes Systems

Gastec tube systems consist of a single gas detector tube and a sampling pump. To take a sample of gas, follow these steps:

  1. Break the tube tips, push in the pump handle and insert the tube
  2. Align the guide marks on the pump body and handle, and pull out the handle until it locks
  3. Wait for a minute before reading the concentration at the color-changed area.
  4. Repeat the sampling procedure to increase the reliability of the results

Reliable Gastec Tube Providers - R K Instruments

At Riken Keiki, we offer gas detector tube systems that deliver effective and efficient results. Using colorimetric technology, our high-quality gastec tubes can accurately analyze a wide range of gases, vapors, and ground substances.

Be it spot sampling or screening, our portable gastec single gas detectors allow users to monitor and detect the presence of hazardous and toxic gases in all kinds of industrial environments.



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The Importance of Gas Calibration Service for Gas Detectors

calibration services

The Importance of Gas Calibration Service for Gas Detectors

Gas detectors play a critical role in ensuring the safety of personnel and workers on a site. When used, calibrated, and properly maintained, gas detectors can be extremely effective and reliable in detecting and alerting people of hazardous and toxic gas in the environment.

What is gas calibration?

Gas calibration services are the best way for you to ensure the accuracy of your gas detection devices. During calibration, the gas detector’s sensors are adjusted to a known concentration of the target gas/es. These adjustments involve the modification of the gas detector’s response to bring the reading in line with what is expected while exposing the instrument to the known source.

Why is it important to calibrate gas detectors?

Like any instrument, gas detectors are subjected to constant wear and tear on the field. From exposure to extreme temperatures and humidity to the contamination of external elements like grease, silicon, and oil, these destructive factors can affect the sensitivity of the sensor, leading to reduced accuracy in gas detection.

Moreover, depending on where the gas detector is used, there are certain regulations that need to be abided by. According to the Singapore Gas Act, every gas calibration meter owned needs to be tested and calibrated in accordance with the Second Schedule before it can be installed and used.

Gas detection devices tend to keep a log of all calibrations and future scheduled calibration dates. By frequently calibrating our devices, we also help keep ourselves in line with the relevant regulations of the company, job site, and the authorities.

Getting a professional to help

Proper usage of gas detection devices begins with precise instrument calibration services. To ensure the best maintenance of your gas detection devices, it is always advisable to seek the help of a professional.

R K Instruments is your one-stop solution for all your gas calibration services needs. As the regional service center of Riken Keiki, we are backed up by a team of dedicated professionals and specialists for your fixed and portable gas detection systems.

From onsite calibration services to in-house repair, we make it convenient for clients to rely on our support.

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