Welch Materials' sample vials are crafted from Type I hydrolytic borosilicate glass, compliant with the United States and European Pharmacopeias. These products are designed to reduce consumables in your experiments, minimize errors caused by ghost peaks, needle damage, and septa movement, and significantly decrease the likelihood of failed analyses. They also allow for effective sample reuse.
Product Features
LCGC certified for quality assurance.
Made from high-quality Type I 51-expansion glass and Type II 33-expansion glass.
Manufactured with computerized photo inspection systems to control quality parameters such as height, diameter, bottom thickness, vial mouth, and thread.
Compatible with a variety of HPLC, LC-MS, and GC instruments.
Large inventory available to meet diverse customer demands.
Vials, caps, and septa can be purchased separately.
Excellent batch-to-batch reproducibility.
How to Select the Right Vials and Septa
Septa Selection Guide
PTFE (Polytetrafluoroethylene)
Recommended for single-use injection.
Ideal for mass spectrometry applications.
Outstanding solvent resistance and chemical compatibility.
Does not reseal after puncture.
Not recommended for long-term sample storage.
PTFE/Silicone
Recommended for multiple injections and sample storage.
Excellent resealing capability.
Combines the chemical resistance of PTFE before puncture with the compatibility of silicone after puncture.
Operates effectively within a temperature range of -40°C to 200°C.
