Radiello® Passive Air Samplers by Merck: High-Performance Air Monitoring Solutions for VOCs, Aldehydes, BTEX & More

Petrochemical and industrial settings demand precise solutions for monitoring air quality and ensuring safety from VOCs, BTEX, aldehydes, and more. Radiello® passive air samplers by Merck meet these critical requirements with an advanced radial design, high sensitivity, and ease of use, enabling efficient detection of hazardous compounds without the need for sampling pumps.

Benefits of Radiello® passive air samplers

• No sampling pump required, helping simplify deployment for petrochemical and industrial air quality monitoring.
• Low detection limits across a wide concentration range of 1 ppb to 1000 ppm support reliable measurement of low-level contaminants for exposure and emission assessment.
• Flexible sampling times from 15 minutes to 30 days enable short-term checks and longer-term monitoring using the same passive approach.
• Greater adsorbent capacity helps minimize reverse diffusion and improves uptake rate consistency for more reproducible results.
• High and consistent sampling rates from the radial passive sampling design support faster sampling and more consistent collection under real monitoring conditions.
• Improved robustness to wind, temperature, and humidity helps maintain sampling performance across variable field environments.
• Broad applicability supports monitoring of hundreds of gaseous compounds, including VOCs, BTEX, aldehydes, phenols, ammonia (NH3), ozone (O3), 1,3-butadiene, isoprene, nitrogen dioxide and sulfur dioxide (NO2 and SO2), anesthetic gases and vapors, hydrogen sulfide (H2S), hydrochloric acid (HCl), and hydrofluoric acid (HF).
• Proven performance for sampling in petrochemical environments supports trusted results for worker risk assessment and for evaluating potential community exposure during events such as oil spills or fugitive emissions.

Features of Radiello® passive air samplers

• Passive sampler architecture: Radiello® passive air samplers employ a radial passive sampling design.
• Diffusive body options: The Radiello® system includes four different diffusive bodies.
• Adsorbent cartridge platform: Radiello® supports over 10 cartridge adsorbents, supplied as either pure adsorbents or chemically coated supports.
• Example cartridge chemistries: available cartridge types include charcoal, Carbograph, and Carbopack™ X.
• Dedicated sampler configurations: radiello® cartridges and diffusive bodies are offered in configurations for BTEX/VOC chemical desorption, BTEX/VOC thermal desorption, hydrogen sulfide for visible spectrometry, and 1,3-butadiene and isoprene for thermal desorption.
• Trial size radiello® Starter Kits: each kit contains 2 adsorbent cartridges, 1 diffusive body, and 1 triangular support plate with barcode labels, lapel clip, and vertical adapter.
• Kit configuration example, Hydrogen Sulfide for Visible Spectrometry (RAD170S): includes a cartridge of Microporous PE impregnated with Zinc Acetate, a vertical adapter, a triangular baseplate, and a white diffusive body.
• Kit configuration example, VOC/BTEX for Chemical Desorption (RAD130S): includes a charcoal cartridge, a vertical adapter, a triangular baseplate, and a white diffusive body.
• Kit configuration example, VOC/BTEX for Thermal Desorption (RAD145S): includes a Carbograph cartridge, a vertical adapter, a triangular baseplate, and a yellow diffusive body.
• Kit configuration example, 1,3-Butadiene and Isoprene for Thermal Desorption (RAD141S): includes a Carbopack™ X cartridge, a vertical adapter, a triangular baseplate, and a yellow diffusive body.

Technical specifications for Radiello® passive air samplers

• Sampling time range: 15 min. to 30 days
• Concentration range: 1 ppb–1000 ppm
• Adsorbent cartridge options: Over 10 cartridge adsorbents
• Diffusive body options: Four different diffusive bodies

Application and usage of Radiello® passive air samplers

• Petrochemical industry air quality monitoring: Used to measure emissions from manufacturing operations and to assess employee exposure risk to hazardous chemicals such as benzene, toluene, ethylbenzene, xylene (BTEX) and volatile organic compounds (VOCs), as well as hydrogen sulfide, nitrogen dioxide, and sulfur dioxide.
• Employee exposure risk assessment: Applied where employees are at risk of exposure to chemical compounds that are detrimental to health and safety, including benzene and hydrogen sulfide.
• Environmental crisis monitoring: Used when communities may assume risks at times of environmental crisis such as oil spills, or fugitive emissions from petrochemical operations and transportation processes.
• Passive sampling deployment: Used without a sampling pump.
• Target analytes supported by Radiello® sampling options: Suitable for sampling VOCs, aldehydes, BTEX, phenols, ammonia (NH3), ozone (O3), 1,3-butadiene, isoprene, nitrogen dioxide and sulfur dioxide (NO2 and SO2), anesthetic gases and vapors, hydrogen sulfide (H2S), hydrochloric acid (HCl), and hydrofluoric acid (HF).

Standard methods supported by Radiello® passive air samplers

• OSHA:
  • OSHA 5000 / 5001: Organic Vapors; Passive Sampling, radiello BTEX/VOC (RAD130)
  • OSHA 12: Benzene; Passive Sampling, radiello BTEX/VOC (RAD130)
  • OSHA 83: 2-Butoxyethanol; Passive Sampling, radiello BTEX/VOC (RAD130)
  • OSHA 111: Toluene; Passive Sampling, radiello BTEX/VOCs (RAD130 / RAD145)
  • OSHA 1002: Xylenes/Ethylbenzene; Passive Sampling, radiello BTEX/VOCs (RAD130 / RAD145)
  • OSHA 1005: Benzene; Passive Sampling, radiello BTEX/VOCs (RAD130 / RAD145)
  • OSHA 1007: Formaldehyde; Passive Sampling, radiello DNPH (RAD165)
  • OSHA 1008: Hydrogen Sulfide; Passive Sampling, radiello H2S (RAD170)
  • OSHA 1011: Sulfur Dioxide; Passive Sampling, radiello HF/NO/SO2 (RAD166)
  • OSHA ID 110: Fluorides (F and HF); Passive Sampling, radiello HF/NO2/SO (RAD166)
• NIOSH:
  • NIOSH 1501: Aromatic Hydrocarbons; Passive Sampling, radiello BTEX/VOC (RAD130)
  • NIOSH 2541: Formaldehyde by GC; Passive Sampling, radiello Aldehydes (RAD165)
  • NIOSH 3700: Benzene by Portable GC; Passive Sampling, radiello BTEX/VOC (RAD130)
  • NIOSH 6013: Hydrogen Sulfide; Passive Sampling, radiello H2S (RAD170)
• ASTM:
  • ASTM D3686: Organic Vapors; Passive Sampling, radiello BTEX/VOC (RAD130)
  • ASTM D6196: Volatile Organic Compounds (VOCs); Passive Sampling, radiello BTEX/VOC (RAD145)
• EPA:
  • EPA TO-15: Toxic Organic Compounds in Ambient Air; Passive Sampling, radiello BTEX/VOCs (RAD130 / RAD145)
  • EPA TO-17: Polar and non-polar VOCs, select aldehydes; Passive Sampling, radiello BTEX/VOCs (RAD130 / RAD145)

Trial Size radiello® Starter Kits

Each kit contains: 
• 2 adsorbent cartridges
• 1 diffusive body
• 1 triangular support plate with barcode labels, lapelclip, and vertical adapter

Chemical Express, with over 23 years of expertise, is the official distributor of Merck and Radiello® passive air samplers in Thailand. Access Radiello® passive air samplers and related air monitoring solutions directly from Chemical Express for trusted quality, local availability, and technical support.