When using Electrochemical Detection, spurious Peaks in your Chromatogram may be observed if a Nylon Syringe Filter is used with a DI Water solvent. The anionic peaks are most likely Nitrate Extractable and therefore we recommend using Polyester Sulfone (PES) Syringe Filters instead. This membrane type is suited to situations when you want to avoid nitrate Extractables.

If anions are not a concern, Nylon Filters are adequate for Aqueous Solvents with Electrochemical Detection.

AQ Brand Syringe Filter Ordering Information