• arrives pre-soaked and ready for immediate use
• Compared to traditional offline sample preparation columns , saving time and effort
• Protects columns and suppressors
• Removes up to 0.01% of non-ionic surfactants (such as Triton™ x-405) from 500µL samples
• Remove up to 20mg of protonated carboxylic acids (e.g. benzoic acid at pH <4)
• Keep sample pH constant
• Filter 80% or more diameter Particles exceeding 20µm

It has an injection bottle cap that can automatically process samples, which can remove possible Contaminating particulates and hydrophobic organics (including nonionic surfactants, hydrocarbons, aromatic dyes, and some carboxylic acids), extending column and suppressor 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.

Dionex Guardcap HRP caps are the same size as common filtered caps used with Dionex vials. Unlike traditional offline sample preparation purification columns, Dionex Guardcap HRP injection vial caps do not require time-consuming pretreatment steps before use. Simply attach these functionalized injection vial caps to your injection vial. , and then load the autosampler.