HPLC Sample Prep

Top 6 Questions You Should Ask When Buying HPLC Sample Prep Products (specifically, SPE equipment):

1. What is your sample matrix?

3. What are your target analyte(s)?

4. What are your sample clean up goals (high recovery vs. clean-up vs. speed)?

5. What sample preparation format is best for your work?

6. What is your mode of analysis (LC/UV, LC/MS/MS, GC/FID, GC/MS, etc.)?

Close to 40 percent of respondents to our latest sample prep survey currently automate or are planning to automate their entire sample preparation process or specific techniques within the process.

Sample preparation can be achieved using several different techniques, and sometimes the best technique is dictated by the sample type. Based on respondents’ replies, the most common techniques include filtration, solvent extraction, liquid- liquid extraction (LLE) and solid phase extraction (SPE).

The top three features / factors that influence the decisionmaking process for making improvements in sample preparation are: Lower costs (reagents, syringe filters, vials and other related accessories)—97 percent; greater quality of data—94 percent; and faster sample prep time—85 percent.

Sample preparation is an essential step in many analyses and the importance of accurate sample preparation techniques cannot be overstated. The sample preparation procedure significantly impacts assay throughput, data quality, and analysis cost. Contamination may affect the analytical results for all applications, hence, reagents used in sample preparation, including water, need to be of increasingly high purity. Based on vendor estimates, errors of commonly used measurement methods are usually below 20 percent but can easily rise to more than 200 percent. To avoid the total failure of an analytical procedure, it is better to invest effort and money in the improvement of sample preparation techniques rather than squeezing the measurement procedures to get one or two percent improvement in standard deviation.

Recently Released Sample prep products

Strata™-X Polymeric SPE Sorbents
• Provide unique polymeric selectivities that cover a diverse spectrum of analytes
• Simplify the method development process for fast and efficient sample preparation
• Retains analytes by several different sorbentanalyte interactions
• Remove unwanted contaminants including phospholipids for excellent chromatography
• Large-particle, large-pore options are also available

Phenomemex
www.phenomenex.com

Samplicity® Filtration System
• Designed to provide a high-throughput alternative to syringe filters when preparing samples for UHPLC and HPLC analysis
• Enables simultaneous filtration of up to 8 samples in seconds
• Low hold-up volume allows processing of samples as small as 300 μL
• Available with Millex Samplicity® filters made with EMD Millipore’s hydrophilic polytetrafluoroethylene (PTFE) membranes

EMD Millipore
www.millipore.com

SiliaPrepX™ Polymeric SPE cartridges & Well Plates
• Products include all the phases currently used in the field of sample treatment (HLB, DVB, SCX, SAX, WCX and WAX)
• Presents an excellent lot-to-lot reproducibility allowing clean extract, reducing the ion suppression and increasing the selectivity for LC-MS/MS applications
• Complete range of sorbents has a high loading capacity

SiliCycle
www.silicycle.com

GX ASPEC™ Series
• Provides rugged and reliable automation of Solid Phase Extraction (SPE) applications utilizing 1,3 or 6 mL cartridges
• Utilizes Mobile Rack technology to completely automate the SPE process
• On-bed reservoirs allow access of up to four solvents without taking up a valuable rack position
• Features Jet Wash rinse technology with optional rinse pump

Gilson
www.gilson.com

HPLC Sample Prep Product Manufacturers