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FM4: Air Sampler for PFAS

SKU: 1050-13015
Brand: GL Sciences
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Get expert advice or a personalized quote. Call 1-310-984-1946 or Send Message Now!
Get expert advice or a personalized quote.
Call 1-310-984-1946 or Send Message Now!
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Scientists Since 1968

Introducing FM4: An Innovative Air Sampler for Comprehensive PFAS Analysis in Air


An air sampler called FM4 for per- and polyfluoroalkyl substances (PFAS) was developed for analyzing PFAS in air. PFAS analysis using FM4 is a groundbreaking approach, which enabled the simultaneous collection and analysis of particulate and gaseous PFAS in air.

In conventional collection methods based on filtration, accurate measurement is often difficult because gaseous PFAS may be adsorbed on particles collected on the filter surface. A gaseous PFAS may change to its non-volatile form during sampling. To solve these limitations, the FM4 was designed with an impactor that minimizes the contact between particles and gas and three types of adsorbents, which enable simultaneous collection of ionic and neutral/volatile PFAS.

The collected PFAS is eluted with organic solvents and quantified by gas chromatography-tandem mass spectrometry (GC-MS/MS) and liquid chromatography-tandem mass spectrometry (LC-MS/MS).
Conventional activated carbons typically contain complicated pores. They have been used as adsorbents for PFAS; however, the complete elution of adsorbed PFAS is difficult to achieve. Therefore, we developed a new functional activated carbon adsorbent (GAIAC), which was used as the gas-type adsorbent. GAIAC is an innovative sorbent that is composed of synthetic resin fiber with optimized pore and surface activity, which enable the collection and elution of PFAS.




Comprehensive Sampling


Despite its compact size, the FM4 Air Sampler can simultaneously collect both particulate and gaseous substances. It allows the amount of each substance collected to be separately determined, making it possible to comprehensively evaluate the sampled air.


Excellent Recovery Rate


We have tested the FM4 Air Sampler with a wide range of PFAS and have achieved excellent recovery rates for all of them.

Capable of Collecting Gaseous PFAS such as FTOHs


Up to now, it has been difficult to collect gaseous PFAS in the air. However, thanks to the FM4 Air Sampler’s newly developed activated-carbon desorption material, this is no longer a problem.


Portable and Easy to Deploy


Because the FM4 Air Sampler is lightweight and compact, it is easy to carry and, with its very small installation footprint, easy to deploy.


Product Structure


Recovery of Gaseous PFAS
(general atmosphere)

Excellent Recovery for the most volatile 4:2 FTOH


20 L/ min, 48 hours sampling
Results when various labeled compounds 5ng are added to PUF


Analyses of Neutral (Volatile) PFAS
using GC-MS/MS





Description Material Dimensions Weight Connection Qty. Cat.No.
FM4 Aluminum (anodizing treatment) Φ60 mm×195 mm approx. 900 g Rc 1/4 1 1050-13015


Description Specification Number of use per sampling Qty. Cat.No.
Quartz Fiber Filter QFF31 Impactor section, Φ31mm 3 pcs 100 pcs 1050-13022
Quartz Fiber Filter QFF47 Backup, Φ47 mm 1 pc 100 pcs 1050-13023
Polyurethane Foam PUF4750 Φ47 mm×50 mm 1 pc 10 pcs 1050-13021
Activated Carbon Fiber Disk (GAIAC FF047) Φ47 mm×2 mm 1 pc 20 pcs (2/pk × 10pks) 1050-13020


There are application notes for FM4: Air Sampler for PFAS.
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FM4: Air Sampler for PFAS
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