Certain features of will be down for maintenance the evening of Friday August 18th starting at 8:00 pm CDT until Saturday August 19th at 12:01 pm CDT.   Please note that you still have telephone and email access to our local offices. We apologize for any inconvenience.


Analysis of a few analyte types is better accomplished using the HPLC technique. These analyte types include carbamate and urea pesticides, glyphosates, diquat and paraquat, carbonyls, polyaromatic hydrocarbons (PAHs), and explosives. Prior to analysis, samples first undergo an extraction process which partitions analytes into an organic solvent compatible with the instrumentation. Example US EPA methods include 532, 547, 549.2, 554, 610, 632, 632.1, 8310, 8315, 8330, TO-5, and TO-11.

Chemistry Recommendations
  • Carbamate and urea pesticides: C18
  • Glyphosates: SAX1
  • Diquat and paraquat: C18
  • Carbonyls: C18
  • Polyaromatic hydrocarbons (PAHs): LC-PAH, C18
  • Explosives: C18, Cyano

Column Types
  • Titan 1.9 μm Porous: for UHPLC instruments
  • Ascentis Express 2.7 μm Fused-Core: for faster analysis on any system
  • Ascentis Express 5 μm Fused-Core: for faster analysis on non-UHPLC instruments
  • Ascentis Porous: for non-UHPLC instruments
  • Discovery Porous: for non-UHPLC instruments
  • SUPELCOSIL Porous: for non-UHPLC instruments