Center Drain (CD™)Vials

Reporter US Volume 26.5

The patented Center Draining or CD Vial has a unique conical interior bottom that promotes draining of the vial’s contents into the center bottom of the vial, where virtually all of it can be extracted. The production process ensures consistency of quality and precision in the CD Vials. The conical well, located in the exact center of the vial bottom, features a smooth transition from sidewall into the well, and the bottom thickness dimension is the same in each vial.


  • Library sample storage
  • Lyophilization
  • Centrifugation
  • Micro mixing
  • Extraction
  • Concentrations
  • Derivatization
  • Hybridization
  • Anaerobic Reactions
  • Homogenization
  • Small scale reactions
  • Radiosynthesis
  • Catalytic hydrogenation

In comparison tests against other manufacturers’ conical highrecovery vials, the CD Vial allows maximum extraction (<4 μL dead volume), while the competitors’ vials allow the contents to hang up in the transition area, leaving several microliters of liquid still in the vials after extraction. As shown in Figure 1, there is a significant amount of sample remaining in the competitor’s vial on the right, while the CD Vial has yielded almost total recovery of the liquid in the vial.

Figure 1. Superior Sample Extraction from CD Vial Compared to Competitor Vial

Features and benefits:

  • Limited volume injections with less than 4 μL dead volume
  • Eliminates bent needle problem associated with limited volume inserts
  • Will withstand temperatures from -70 °C to 160 °C
  • Concentrate samples in the same vial that you use in autosampler
  • Solid glass base offers better heat sink for concentrating samples
  • Made from Type 1 Borosilicate glass

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