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Per- and poly-fluoroalkyl substances

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Per- and poly- fluoroalkyl substances (PFAS) are a group of chemicals that have been widely used in industry since the 1950s. PFAS include chemicals such as perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA). 

PFAS have been used in the manufacture of:

  • non-stick cookware
  • fabric
  • furniture and carpet stain protection applications
  • food packaging
  • industrial processes
  • fire-fighting foam 

Many PFAS can persist in humans, animals and the environment. Despite no consistent evidence that PFAS causes adverse human health effects, experts recommend only minimal exposure as a precaution. To help minimise this risk, we can routinely perform robust and high quality testing of common PFAS contaminants.

Our services

The National Measurement Institute (NMI) offers National Association of Testing Authorities (NATA) accredited analytical testing services for a comprehensive range of PFAS chemicals.

We meet QSM 5.2: Quality control requirements for PFAS analyses.


We base our method for PFAS testing on:

  • USEPA 537 Determination of Selected Perfluorinated Alkyl Acids in Drinking Water by SPE and LC/MS/MS
  • USEPA Draft Method 821-R-11-007 utilising solid phase extraction (for water) and LC-MSMS detection

This method is NATA accredited for biosolids, soil and water samples. 

Why choose us

Our capabilities include:

  • advanced liquid chromatography–tandem mass spectrometry (LC-MS/MS) instrumentation for PFAS analysis and research
  • NATA accreditation for testing common PFAS in soil and water matrices
  • highly skilled and experienced staff 
  • rapid turnaround times
  • ISO 17043 accreditation for an ongoing international proficiency testing program of PFAS in soil, water and biota
  • regular participation in international proficiency testing to benchmark our analytical performance in testing at ultra-trace levels
  • expertise and knowledge gained through collaborative research projects with prominent universities and other research institutes


PFAS can consist of linear and branched isomers. PFOS and PFHxS isomers using a traceable mixed linear/branched standard are report as totals. All other PFAS isomers are quantified using traceable linear standards and reported as totals.

Our testing services and limits of reporting

We can provide lower limits of reporting for water samples on request.

Analyte NameAbbreviationWater (μg/L) Soil(mg/kg)Biota(mg/kg)Biosolids(mg/kg)
Perfluorobutanoic acidPFBA0.050.0020.0010.01
Perfluoropentanoic acidPFPeA0.020.0020.00050.005
Perfluorohexanoic acidPFHxA0.010.0010.00050.005
Perfluoroheptanoic acidPFHpA0.010.0010.00050.005
Perfluorooctanoic acidPFOA0.010.0010.00030.005
Perfluorononanoic acidPFNA0.010.0010.00050.005
Perfluorodecanoic acidPFDA0.010.0010.00050.005
Perfluoroundecanoic acidPFUnDA0.010.0020.00050.005
Perfluorododecanoic acidPFDoDA0.010.0020.00050.005
Perfluorotridecanoic acidPFTrDA0.020.002-0.005
Perfluorotetradecanoic acidPFTeDA0.020.002-0.005
Perfluorobutane sulfonic acidPFBS0.010.0010.00050.005
Perfluorohexane sulfonic acidPFHxS0.010.0010.00050.005
Perfluorooctane sulfonic acidPFOS0.020.0020.00030.005
Perfluorodecane sulfonic acidPFDS0.010.001-0.005
6:2 Fluorotelomer sulfonic acid6:2 FTS0.010.0010.00050.005
8:2 Fluorotelomer sulfonic acid8:2 FTS0.010.0010.00050.005
Perfluorooctane sulfonamidePFOSA0.010.001-0.005
Perfluorohexadecanoic acidPFHxDA0.020.002-0.005
Perfluorooctadecanoic acidPFODA0.050.005-0.02
2H-Perfluoro-2-decenoic acid(8:2)FOUEA0.010.001-0.005
Perfluoropentane sulfonic acidPFPeS0.010.001-0.005
Perfluoroheptane sulfonic acidPFHpS0.010.001-0.005
Perfluorononanesulfonic acidPFNS0.010.001-0.005
N-Methyl perfluorooctane sulfonamideN-MeFOSA0.020.002-0.005
N-Ethyl perfluorooctane sulfonamideN-EtFOSA0.020.002-0.005
N-Methyl perfluorooctane sulfonamidoacetic acidN-MeFOSAA0.010.002-0.005
N-Ethyl perfluorooctane sulfonamidoacetic acidN-EtFOSAA0.010.002-0.005
N-Methyl perfluorooctane sulfonamidoethanolN-MeFOSE0.050.005-0.01
N-Ethyl perfluorooctane sulfonamidoethanolN-EtFOSE0.050.005-0.01
# 4:2 Fluorotelomer sulfonic acid4:2 FTS0.010.001-0.005
# 10:2 Fluorotelomer sulfonic acid10:2 FTS0.010.002-0.01
# 8:2 polyfluoroalkyl phosphate diester8:2 diPAP0.020.002-0.01

Turnaround times

Our standard turnaround time is 5-30 days.

We also offer 1, 2 and 3 working day turnaround times where agreed.

Submitting samples 

Find out how to submit your environmental testing samples

Request a quote or discuss your requirements 

Contact us for a quote or to discuss how we can tailor our services to meet your analysis requirements. 

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Last updated: 13 September 2019

Content ID: 64598