Polypropylene vials, also called PP vials, are commonly used for pH-sensitive samples, sodium, or heavy metal analyses. Agilent offer polypropylene vials in three common autosampler vial styles: screw top PP vials, snap top PP vials, and snap/crimp top PP vials. Polypropylene vials are used in a wide variety of applications across all market segments including pharmaceutical, environmental, biopharmaceutical, proteomics, and metabolomics.
The design of polypropylene HPLC vials is based on how much sample needs to be contained and how much needs to be extracted. Vials with a mandrel interior are designed to allow the extraction of the maximum amount of available sample matrix by making sure the autosampler needle is guided to a point at the very bottom leaving minimum residual volume (dead volume).
As an alternative to polypropylene only, Agilent also offers PP vials that include a glass insert or deactivated glass insert. These wide opening plastic vials have a glass flanged insert molded to the inside so that the sample only comes into contact with the high-quality glass vial insert and cap septum.