An introduction to radiello: a passive, diffusive air sampling badge for VOCs

Today, Restek launched the radiello passive, diffusive air sampling badge for VOCs. Oh… so you do not know what that is. Well then, be sure to check out the following video, which will give you an introduction to radiello:

Stay tuned for future blogs featuring how to properly utilize the radiello.

7 Responses to “An introduction to radiello: a passive, diffusive air sampling badge for VOCs”

  1. Matthew Vincent says:

    Nice video Jason. Very informative. I see in some of the literature that there are sorbent beds amenable to thermal desorption analysis after the air sampling with the Radiello. Do you need special TD tubes to make this work? My system is a Markes TD-100xr that takes standard 1/4″ TD tubes. The i.d. of the glass tubes I use are on the order of 4 mm. The o.d. is about 6.4 mm. It’s not clear to me how the sorbent traps that are 4.8 mm in diameter will work with these empty tubes – or on their own with my Markes system using the end caps for the sample tubes required by the instrument. Can you give me an idea as to what is required to make the TD analysis work?

  2. Matthew,

    Thank you for your inquiry. The radiello 145 is a carbon based sorbent designed for thermal desorption (TD). The rad145 sorbent will snugly fit inside a standard (i.e., 3.5 x 0.25″) empty stainless steel TD tube. Not an empty glass TD tube. I know all of this will work for Markes TD tubes, as that is what we use and sell. Restek cat.# 24054 would be the TD tube to accompany the rad145.

  3. Jason
    This is an interesting technology improvement. We are a full service IH consulant in Pittsburgh and could perhaps assist you and the Restek team in field trials at client sites.

  4. Has this been validated with NIOSH/CDC approved test methods? Please cite references to specific analyte test methods.


  5. Minna Lundberg says:

    Interresting video! Are the sorbent beds directly resusable after extraction with a solvent? Or do you need to do some extra work?

  6. Noel,

    The following methods call out radiello:

    EN 14412:2004 – Indoor air quality. Diffusive samplers the determination of concentrations of gases and vapours. Guide for selection, use and maintenance. (references radial samplers)

    EN 14662-5:2005 – Ambient air quality. Standard method for measurement of benzene concentrations. Diffusive sampling followed by solvent desorption and gas chromatography. (radiello described as type B sampler)

    ISO 16200-2:2000 – Workplace air quality — Sampling and analysis of volatile organic compounds by solvent desorption/gas chromatography — Part 2: Diffusive sampling method. (radiello described as type D sampler)

  7. Minna,

    No, the sorbent beds are not to be reused after extraction with a solvent. However, the rad145 is for thermal desorption and therefore may undergo repeated sampling/extraction events.

Leave a Reply

Restek Domestic Customer Service



Your Full Name

Your Email

Company Name


Spam Block (Please leave this blank)

all fields required

Thank you

Your message has been sent. We will be in touch shortly.

Message not sent

Sorry, your message could not be sent at this time. Please try again later, or contact Restek or your local Restek representative via phone.