Improve Acrylamide Analysis with a Faster, Longer-Lasting LC Column

The porous graphitized carbon (PGC) columns typically used for acrylamide analysis by method EN 16618:2015 provide adequate retention of acrylamide and sufficient separation from matrix components, but they are subject to long run times and short column lifetimes. Switching to an Allure Acrylamide LC column is a better alternative: an Allure Acrylamide column used with a deuterated internal standard provides faster total analysis times and meets system suitability requirements longer.

Allure Acrylamide columns meet the EN method 1.7-minute retention time requirement with good separation from matrix components and a much shorter equilibration time. A per analysis savings of 2.5 minutes allows more samples to be analyzed per shift, significantly increasing lab output. In addition to faster run times, testing showed that the Allure Acrylamide column passed the 1.7-minute system suitability requirement for over twice as many injections as a typical PGC column.

Developed to withstand 100% aqueous mobile phases and elute coextracted matrix components rather than strongly retaining them, Restek Allure Acrylamide guard and analytical columns deliver the same robust performance injection to injection and column to column, making them a more reliable choice for acrylamide analysis, even in difficult food matrices like potato chips or coffee.

www.restek.com/acrylamide

Improve Acrylamide Analysis with a Long-Lasting LC Column and a Cost-Effective Internal Standard

Published By: Restek Corporation

Year of Publication: 2019

Link: https://www.restek.com/Technical-Resources/Technical-Library/Foods-Flavors-Fragrances/fff_FFAR3126-UNV

Abstract:The porous graphitized carbon (PGC) columns typically used for acrylamide analysis by method EN 16618.2015 provide adequate retention of acrylamide and sufficient separation from matrix components, but they are subject to short column lifetimes and the need for extensive sample preparation. Here, we demonstrate an approach using an Allure Acrylamide LC column and deuterated internal standard that provides faster total analysis times and meets system suitability requirements longer, allowing labs to significantly increase sample throughput.

New Rxi-65TG Columns Ensure Accurate, Reliable GC Analysis of Triglycerides in Edible Oils

With best-in-class thermal stability, new Rxi-65TG columns from Restek are the top choice for accurate, reliable analysis of triglycerides (acylglycerols) in edible oils. Novel chemistry and cutting-edge manufacturing allow Rxi-65TG columns to outperform leading competitor columns and produce less bleed at a higher maximum temperature (370 °C) than competitor columns produce at their lower maximum temperature (360 °C). Less interference from column bleed means more accurate and sensitive detection of edible oil triglycerides—and more certainty in the results you report. In addition, higher temperature stability means consistent performance and longer column lifetimes with fewer column changes. Food testing labs will benefit from the reproducible retention times, robust inertness, stable baselines, and consistent column-to-column performance provided by low-bleed Rxi-65TG columns.

www.restek.com/Rxi-65TG

Rugged Long-Life ESI Electrodes Provide OEM-Equivalent Results and Longer Lifetimes

The harsh environment inside an MS source takes its toll on ESI electrodes, and once they corrode, sensitivity drops, runs fail, and productivity halts while the instrument is offline for maintenance. To help labs overcome this obstacle, Restek has developed the Long-Life ESI electrode for Sciex Turbo V sources, which is more rugged than original equipment manufacturer (OEM) electrodes. Testing shows that Long-Life ESI electrodes provide equivalent LC-MS/MS performance to OEM electrodes over significantly longer lifetimes. Because they perform the same and are less susceptible to corrosive conditions in the MS source, Restek Long-Life ESI electrodes ensure more instrument uptime for sample analysis and are a particularly good choice for high-throughput laboratories.
View testing results and learn more today at www.restek.com/LongLifeESI.

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

Published By: Restek Corporation

Year of Publication: 2019

Link: https://www.restek.com/Technical-Resources/Technical-Library/General-Interest/general_GNAR3095-UNV

Abstract: The harsh environment inside an MS source takes its toll on ESI electrodes and, once they corrode, sensitivity drops, runs fail, and productivity halts while the instrument is offline for maintenance. The testing detailed here shows that Restek Long-Life ESI electrodes for Sciex Turbo V sources provide equivalent LC-MS/MS performance over significantly longer lifetimes.

Rtx-Wax: A Rugged and Reliable Choice for the Analysis of Glycols in Water

Author: Corby Hilliard and Chris English

Published By: Restek Corporation

Year of Publication: 2019

Link: https://www.restek.com/Technical-Resources/Technical-Library/Environmental/env_EVAR3086-UNV

Abstract: Three types of polyethylene glycol (PEG) columns from different vendors were evaluated to determine which performed best for the analysis of glycols in water. The columns were first challenged with exposure to 600 aqueous injections and then linearity, lifetime, and bleed were assessed. Rtx-Wax columns performed well throughout the test and were the only columns that passed all tests.

 

Using a Methanizer for CO and CO2 Analysis at Low Levels

Author: Mark Badger

Published By: Restek Corporation

Year of Publication: 2019

Link: https://www.restek.com/Technical-Resources/Technical-Library/General-Interest/gen_GNAR3081-UNV

Abstract: Adding a methanizer to a GC-FID is an easy, effective, and cost-efficient way to analyze CO and CO2 at ppb levels. This article explains the technique and shares best practices for preventing problems and obtaining accurate results.

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 samples. This method is recommended for labs wanting to use a single procedure to analyze compounds from all three PFAS categories in potable and non-potable waters.

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 article explores the impact of phase, dimensions, and particle types and provides options that ensure fast, accurate results.