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HPLC vials are small, specialized containers used to hold liquid samples for analysis in High-Performance Liquid Chromatography, ensuring sample integrity by preventing contamination and degradation, and allowing for precise automated injection into the instrument for identifying and quantifying substances in pharmaceuticals, environmental samples, food, and chemicals.

Chromatography (HPLC and GC): These caps and septa are standard accessories for autosampler vials (commonly 1.5 mL, 1.8 mL, or 2 mL). They ensure a secure, leak-proof seal while allowing the autosampler needle to pierce the septum easily to take a sample for analysis.
A 20mm aluminum crimp with a white PTFE/silicone septa is used for securely sealing vials in laboratories and industries, particularly in analytical applications like Gas Chromatography (GC) and headspace analysis. The aluminum cap provides a secure, airtight seal, while the PTFE/silicone septa allows for needle injection while providing a chemical barrier that can resist high temperatures, acid, and alkali corrosion
Clear borosilicate sample vials are used for reliable storage and handling of liquids and samples in laboratories, as well as for personal use in applications like essential oils and serums