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PFAS Delay Column

...Per-and polyfluorinated alkyl substances (PFAS) are a group of widely used industrial compounds the world. Because of their inertness, PFAS are used in tubing and other liquid-contacting parts of an HPLC ... PFAS Delay Column ... Traps system-related PFAS, preventing interference and ensuring accurate trace -level analysis of PFAS in samples. Universal compatibility; works with: o Any HPLC or UHPLC up...

Integrating the Analysis of Ultrashort-Chain PFAS Method Development for Simultaneous Analysis of Ultrashort-Chain, Alternative, and Legacy PFAS

... of ultrashort-chain, alternative, and legacy per- and polyfluoroalkyl substances (PFAS) in various water samples . This method is recommended for labs wanting to use a single procedure to analyze compounds from all three PFAS ... of ultrashort-chain PFAS simultaneously with alternative and legacy PFAS in various water samples. This method is recommended for analytical labs wanting to use a single method to analyze compounds from all three PFAS ... PFAS...

Eliminate the Impact of Instrument-Related PFAS Interferences by Using a Delay Column (PDF 761kB)

...• Traps and “delays” system-related PFAS, preventing interference. • Allows accurate identification and quantitation of trace-level PFAS in samples. • Highly retentive—no breakthrough even...

Integrating the Analysis of Ultrashort-Chain PFAS: Method Development for Simultaneous Analysis of Ultrashort-Chain, Alternative, and Legacy PFAS (PDF 1101kB)

... for the simultaneous analysis of ultrashort-chain, alternative, and legacy per- and polyfluoroalkyl substances (PFAS compounds from all three PFAS categories in potable and non-potable waters. Introduction LC-MS/MS methods...

Eliminate the Impact of Instrument-Related PFAS Interferences by Using a Delay Column

... Traps and “delays” system-related PFAS, preventing interference. Allows accurate identification and quantitation of trace-level PFAS in samples. Highly retentive ... Using a PFAS delay column is an effective way to separate target PFAS in samples from interferences caused by PFAS contamination in the LC system. This article explains how the PFAS delay column can...

PFAS LC Column Anatomy: Which Phase, Dimensions, and Particle Type Are Best? (PDF 1086kB)

... substances (PFAS), you know that awareness and interest are growing as we continue to better understand . Here, we’ll examine the properties that are important to consider when choosing an LC column for PFAS...

News: Eliminate the Impact of PFAS Instrument Contamination with a Restek PFAS Delay Column

Per-and polyfluorinated alkyl substances (PFAS) are often used in tubing and other liquid-contacting parts of an HPLC system, where they can leach into the mobile phase and interfere with sample analysis. This contamination is particularly problematic when analyzing at trace … Continue reading

PFAS LC Column Anatomy: Which Phase, Dimensions, and Particle Type Are Best?

... substances (PFAS), you know that awareness and interest are growing as we continue to better understand . Here, we’ll examine the properties that are important to consider when choosing an LC column for PFAS ... With the expansion of PFAS target analyte lists into shorter chain compounds, the need for better methods is growing. But, when developing new analytical procedures, which PFAS LC column is best...

News: Eliminate the Impact of Instrument-Related PFAS Interferences by Using a Delay Column

Published By: Restek Corporation Year of Publication: 2019 Link: https://www.restek.com/Technical-Resources/Technical-Library/Environmental/enviro_EVAR3001-UNV Abstract: Using a PFAS delay column is an effective way to separate target PFAS in samples from interferences caused by PFAS contamination in the LC system. This article explains how the PFAS delay … Continue reading

News: Integrating the Analysis of Ultrashort-Chain PFAS: Method Development for Simultaneous Analysis of Ultrashort-Chain, Alternative, and Legacy PFAS

Author: Shun-Hsin Liang and Mike Chang Published By: Restek Corporation Year of Publication: 2019 Link: https://www.restek.com/Technical-Resources/Technical-Library/Environmental/env_EVAN3073-UNV Abstract: A simple direct injection LC-MS/MS method was developed and evaluated for the simultaneous analysis of ultrashort-chain, alternative, and legacy per- and polyfluoroalkyl substances (PFAS) in various water … Continue reading

ChromaBLOGraphy: What are GenX and PFBS? Why are they important in PFAS analysis?

Analysis of PFAS (per- and polyfluorinated alkyl substances) has been a hot topic for envoironmental labs for the last several years. Currently there are two C8 based PFAS compounds (PFOA and PFOS) with a health advisory level of 70 ppt in drinking water announced by the US EPA. In 2018 at the National Leadership Summit, […]

News: PFAS LC Column Anatomy: Which Phase, Dimensions, and Particle Type Are Best?

Published By: Restek Corporation Year of Publication: 2019 Link: https://www.restek.com/Technical-Resources/Technical-Library/Environmental/env_EVAR3069-UNV Abstract: With the expansion of PFAS target analyte lists into shorter chain compounds, the need for better methods is growing. But, when developing new analytical procedures, which PFAS LC column is best? This … Continue reading

Rapid Perfluorinated Alkyl Acid Analysis by LC-MS/MS Increases Sample Throughput (PDF 640kB)

... to PFOS. Perfluorinated alkyl substances (PFAS) in general are not currently regulated in the United monitor for the presence of PFAS in drinking water. Perfluorinated alkyl acid analysis can be challenging...

ChromaBLOGraphy: Sorry for the delay. Here is your chromatogram with and without the PFAS Delay Column.

Sometimes I hear this from customers: “I don’t need a delay column. I haven’t had any trouble without it so far.” It might be true. You may not have any issues without the delay column, especially when your samples are, for example, highly PFAS contaminated soil samples because the interference is too small to affect […]

Get More Uptime with Restek’s Long-Life ESI Electrode for Sciex Turbo V Sources (PDF 1130kB)

...: Electrode comparison: PFAS reference standard analysis (ESI-, MRM). LC_GN0595 Column Raptor C18 (cat .# 9304552) Dimensions: 50 mm x 2.1 mm ID Particle Size: 5 μm Pore Size: 90 Å Temp.: 40 °C Sample PFAS...

ChromaBLOGraphy: See how the PFAS Delay Column works! Psst.. Do not delay your action, and take a look at this now.

Per- and polyfluorinated alkyl substances (PFAS) analysis usually requires very low level detection (parts per trillion level) in drinking water. The most common problem we run into is that PFAS are everywhere, including our lab and the very instrument (LC-MS/MS) we use to detect those compounds, so having system-related background interference is very common. There […]

ChromaBLOGraphy: Are You Interested in Ultrashort-Chain PFAS Analysis? Be Sure to Screen Your Solvents/Solutions for Contamination

Trifluoroacetic acid (TFA) is the perfluorinated analogue of acetic acid with the shortest possible chain length (C2) among per- and polyfluoroalkyl substances (PFAS). Together with perfluorinated C3 compounds, they are defined as ultrashort-chain PFAS. C2 and C3 PFAS are ubiquitous and very mobile in global aquatic environment including rain, snow, river, and even ocean. TFA, […]

Frequently Asked Questions: HPLC and UHPLC

...? What are PFAS Delay Columns? What are PFAS ? What are GenX and PFBS? What kind of labs do PFAS testing...

Rapid Perfluorinated Alkyl Acid Analysis by LC-MS/MS Increases Sample Throughput

.... Perfluorinated alkyl substances (PFAS) in general are not currently regulated in the United States, but the U for the presence of PFAS in drinking water. Perfluorinated alkyl acid analysis can be challenging...

Get More Uptime with Restek’s Long-Life ESI Electrode for Sciex Turbo V Sources

... Figure 4: Electrode comparison: PFAS reference standard analysis (ESI-, MRM...

For advanced chromatogram searching, please check out our Chromatogram Library Search Tool.

EPA Method 537.1 on Raptor C18

LC_EV0560

Column: Raptor C18 (cat.# 9304A52), Dimensions:50 mm x 2.1 mm ID, Particle Size: 2.7 µm, Pore Size: 90 Å, Temperature: 40 °C
Detector: MS/MS

Perfluorinated Alkyl Acids (PFBS, PFOA, PFOS, and HFPO-DA/GenX) on Raptor C18 5 μm

LC_EV0553

Column: Raptor C18 (cat.# 9304552), Dimensions:50 mm x 2.1 mm ID, Particle Size: 5 µm, Pore Size: 90 Å, Temperature: 40 °C
Detector: MS/MS

Perfluorinated Alkyl Acids on Raptor C18 by LC-MS/MS for EPA Method 537

LC_EV0548

Column: Raptor C18 (cat.# 9304552), Dimensions:50 mm x 2.1 mm ID, Particle Size: 5 µm, Pore Size: 90 Å, Temperature: 40 °C
Detector: MS/MS

Perfluorinated Compounds (PFCs) on Raptor C18 (1.8 μm)

LC_EV0540

Column: Raptor C18 (cat.# 9304252), Dimensions:50 mm x 2.1 mm ID, Particle Size: 1.8 µm, Pore Size: 90 Å, Temperature: 40 °C
Detector: MS/MS

Perfluorinated Compounds (PFCs) on Raptor C18 (1.8 μm)

LC_EV0547

Column: Raptor C18 (cat.# 9304252), Dimensions:50 mm x 2.1 mm ID, Particle Size: 1.8 µm, Pore Size: 90 Å, Temperature: 40 °C
Detector: MS/MS

Perfluorooctanoic Acid (PFOA) and Perfluorooctanesulfonic Acid (PFOS) on Raptor C18 by LC-MS/MS

LC_EV0536

Column: Raptor C18 (cat.# 9304512), Dimensions:100 mm x 2.1 mm ID, Particle Size: 5 µm, Pore Size: 90 Å, Temperature: 40 °C
Detector: MS/MS

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