Nacalai USA - Innovations for Life Sciences

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Easy Piercing Seal (EPS) punctures easily to prevent needle clogging or damage. In addition, no adhesive residues are left on the plate or injector needle. The EPS plate seal is made of polyolefin and is highly resistant to organic solvents. Some suggested applications are HPLC and LC/MS.



  • Punctures easily to prevent needle clogging
  • No adhesive residue left on plate or injector needle
  • Highly resistant to organic solvents such as DMSO, acetonitrile and methanol
  • Working temperature range: -80°C to 80°C



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Application Data

  • Resistance to organic solvents, LC/MS data (PDF)
  • Airtightness and evaporation of solvents (PDF)
  • Sealing Performance (PDF)


  • HPLC users who have experienced needle blockage and adhesive residue on the needle surface of the autosampler.
  • LC/MS users who have experienced background peaks during high sensitive analysis due to degradation of adhesive.
  • Researchers who seek easily pierceable seals with needles or plastic tips.


Material Polyolefin + synthetic adhensive
Functional Temperature Range -80oC -  + 80o
Size 80 mm x 122 mm 









Ordering Information

Product Cat.No. PKG Size Price(US$)  
RAPID EPS R37.001.00 100 sheets 198.00 Buy

The product is manufactured by BioChromato, Inc.