Raptor™ EXP® Guard Column Cartridges
A Restek® LC guard cartridge in an EXP® direct connect holder is the ultimate in column protection.
Receive your quote directly from the manufacturer.
An excellent chromatographic value addition.
LC/QTOF drug ananlysis
It works well for extending the life of the column and is simplistic in it's ease of use and replacement.
Review Date: 12 Apr 2019 | Restek Corp.
A Restek® LC guard cartridge in an EXP® direct connect holder is the ultimate in column protection.
To help protect your investment and further extend the life of our already-rugged LC columns, Restek offers the patent-pending guard column hardware developed by Optimize Technologies.
Raptor™ EXP® Guard Column Cartridges Features:
- Free-Turn® architecture lets you change cartridges by hand without breaking inlet/outlet fluid connections—no tools needed.
- Patented titanium hybrid ferrules can be installed repeatedly without compromising high-pressure seal.
- Auto-adjusting design provides ZDV (zero dead volume) connection to any 10-32 female port.
- Guard column cartridges require EXP® direct connect holder.
- Pair with EXP® hand-tight fitting for tool-free installation.
Two decades of pioneering innovation with Restek’s biphenyl LC column
Achieving reliable separations in complex analyses has long challenged chromatographers, especially when working with early-eluting or closely related compounds. Traditional phases often fall short, requiring intricate mobile phases that complicate MS detection.
Learn how enhanced selectivity and robust performance can simplify method development, accelerate separations, and support confident results, even in the most demanding LC-MS workflows.
Analysis of pesticides and mycotoxins in cannabis brownies
This application note by Restek Corporation describes the development of a test method for the analysis of pesticides and mycotoxins in cannabis brownies using the California list.
High-Throughput Analysis of Cannabinoids by LC-UV
As the cannabis market grows, interest in more detailed analysis of cannabinoid profiles is expanding because more comprehensive data can be used for strain identification as well as to ensure more accurate potency testing. More than 100 cannabinoids have been isolated from cannabis to date, and these compounds can interfere with the five most commonly analyzed cannabinoids. Download this guide to discover a LC-UV method for the resolution of 16 cannabinoids for which commercial standards are available.
Fast, low-solvent analysis of cannabinoids increases lab productivity and decreases solvent costs
In the highly competitive cannabis testing market, labs that can expand services while decreasing costs have a strong advantage. High-demand tests such as potency testing and cannabinoid profiling can be improved by increasing speed, expanding analyte lists, and reducing costs. In this application note, Restek demonstrates a rapid, low-solvent analysis method that aims to fully resolve 19 cannabinoids that only uses 3 mL of accetonitrile per run. Using this method promises more accurate potency results and significantly reduced solvent costs.
LC-MS/MS Analysis of Paraquat and Diquat without Ion-Pairing Reagents
Discover an LC-MS/MS analysis of paraquat and diquat that does not use ion-pairing reagents, but still provides good retention and peak shape. In this analysis, both target analytes were fully resolved and showed much greater sensitivity at 50 ng/mL (50 ppb) compared to ion-pairing methods. This fast, 7-minute analysis provided consistent MS results using a 50 mM buffered mobile phase, which is within the buffer salt concentration limits that are generally recommended to minimize contamination and maintenance for LC-MS/MS systems.
