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Reversed phase tips that contain 30 mg styrene divinyl benzene sorbent, ideal for nonpolar and slightly polar compounds. Applications include extraction of pesticides from fruits and vegetables, chlorophyll from green plant matrices, and tetrahydrocannabinol (THC) in blood and urine.


Cation exchange tips that contain 20 mg sorbent with sulfonic acid groups for strong adsorption interactions with basic compounds. Applications include extraction of basic drugs from blood and urine, melamine from food samples, and nitrosamines from tobacco products and biological matrices.


Weak anion exchange tips that contain 20-30 mg sorbent with poly-amino groups for adsorption interactions with acidic compounds as well as a strong reversed phase for many drugs and metabolites. This product is ideal for “cleanup” methods designed to extract sample matrix compounds into organic solvent rather than the analytes of interest. Applications include cleanup methods for comprehensive analysis of drugs and metabolites in blood and tissues; removal of fatty acids prior to extraction of pesticides in high fat content samples; removal of proteins and sugars in milk samples prior to melamine and cyanuric acid analyses; extraction of numerous drugs and metabolites in urine, including benzodiazepines.


Weak anion exchange tips that contain 30 mg sorbent with poly-carboxylate groups for adsorption of basic compounds. This product has been specifically developed for analysis of aminoglycosides in meat products.


Tips that contain from 30-100 mg of silica gel. Applications have been developed for rapid cleanup of environmental samples in order to remove matrix interferences during analysis of polycyclic aromatic hydrocarbons (PAHs).


Tips that contain 30-100 mg C18 sorbent. Applications include rapid sample cleanup to remove matrix interferences.


DPX offers blank screened tips for method development, in 1 mL or 5 mL sizes. Contact us for additional information.