Dietary Supplements Solutions

Navigate New FDA Regulations and Ensure Compliance with Restek

RESIDUAL SOLVENTS

Learn how to successfully implement USP <467> for residual solvents analysis. Improve system suitability pass rates by optimizing your system. We show you how to set up and run your GC for accurate, reliable results.

Revised USP <467> Residual Solvent Method:
Satisfy New Method Requirements with Restek Columns and Standards

This online article provides an overview, chromatograms, and technical tips for successfully analyzing residual solvents using USP <467>.
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Recommended Products

• Rtx®-1301 GC Columns
• Stabilwax® GC Columns

Reference Standards

• USP <467> (OVI) Solvents
• European Pharmacopoeia/ICH Solvents

» Click here for more residual solvent products and resources.

PESTICIDES ANALYSIS

Restek QuEChERS tubes were selected as 2009 winners of the Laboratory Equipment Readers’ Choice award based on their value and performance at the bench. These tubes are a simple, effective, and inexpensive way to extract and clean pesticides from a variety of difficult matrices.

Intro to QuEChERS

New to QuEChERS? Learn the basics of this sample extraction and clean up procedure with this introductory audio slideshow, narrated by Jack Cochran.
View slideshow

Pesticides in Dietary Supplements: Advantages of QuEChERS vs. PAM 303

< Added March 2010

Restek has developed the first QuEChERS-based method for determining pesticide residues in dietary supplements. This simple, cost-effective procedure reduces matrix interferences as well as sample prep variation among technicians.
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Fast, Simple QuEChERS Extraction and Cleanup
of Pesticide Residue Samples

QuEChERS dSPE methods simplify extract cleanup, reduce material costs, and improve sample throughput. This 4-page applications note shows the effectiveness of QuEChERS sample cleanup using a multiresidue analysis of pesticides on strawberries.
Download (164kb PDF)

Free sample packs!

Call 800-356-1688 to request a sample pack and compare QuEChERS to your current method. (Limit one per customer. Sample packs not available online.)

Comprehensive Pesticide Residue Analysis by LC/MS/MS
Using an Ultra Aqueous C18 column

Analysis of pesticide residues in foods is complicated by the large number of target compounds. LC/MS/MS analysis using an Aqueous C18 column provides more comprehensive results than GC alone.
Find out more

QuEChERS Instruction Sheets—detailed procedures that make it easy to get started!

• AOAC Method
• Mini-Multiresidue Method
• dSPE Clean-Up

Recommended Products

• Q-sep™ QuEChERS Products
• Q-sep™ QuEChERS Standards
• Rxi®-5Sil MS GC Columns
• Ultra Aqueous C18 HPLC Columns

» Click here for more pesticide analysis products and resources.

OTHER DIETARY SUPPLEMENTS APPLICATIONS

A More Versatile C18 Column:
The Aqueous C18—a Single Phase Solution for Multiple Dietary Supplement Applications

Restek's Aqueous C18 columns offer excellent retention of hydrophilic compounds, making them more versatile than a conventional C18 and ideal for fast and effective method development. Includes water-soluble vitamin, organic acid, and pesticide applications. | Find out more

Use our chromatogram library to research other applications, including vitamins, organic acids, and more.

• GC Applications
• HPLC Applications

Recommended Products

• Reference Standards

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