Each Guardcap AEX cap:

• Saves time and effort compared to traditional offline sample preparation columns.
• Remove up to 800 mg/L anions (such as sulfate) from 250 µL sample.
• Neutralizes up to 250 µL of 30 mM MSA, HCl, or other monovalent acids.
• Filters more than 80% of particles with a diameter exceeding 20 µm.

Achieve superior analytical results with significantly reduced workload
Extend the life of analytical columns and suppressors by removing anions and particulates that can cause contamination life. Sample preparation is performed automatically online by an autosampler within the Dionex Guardcap cap. Dionex Guardcap injection caps improve the reproducibility of analysis because key parameters such as time, flow rate, sample delivery volume, etc. can be set and controlled through the injector.

Convenient and easy to use
Dionex Guardcap AEX caps are available in common filter cap sizes for use with Dionex plastic bottles. Unlike traditional offline sample preparation columns, Dionex Guardcap AEX caps do not require time-consuming pre-treatment procedures before use. Simply attach these functionalized caps to your vials and they are ready for you. samples for analysis.