1) Description
18-400 open screw cap is a vial cap specially designed for laboratory use and is suitable for various vials with 18-400 specification threads. The cap is made from high quality polypropylene material ensuring durability and chemical stability. The cap is designed with fine vertical stripes to enhance the grip and make it easier to open and close. The septa material is PTFE and silicone, and can be selected with or without pre-opening to meet different sealing and sampling needs.
2) Application
• Chromatographic Analysis: The open top cap design allows samples to be injected directly through the syringe without opening the vial cap, which is suitable for experiments that require frequent sampling or adding reagents.
• High-precision Testing: The open top cap combines PTFE and silicone septa to provide excellent chemical inertness and sealing, ensuring that the sample is not contaminated by the outside world, and is suitable for chemical and biological testing that requires extremely high precision.
• Sample Preservation and Transportation: Especially suitable for sensitive samples that need to be stored or transported for a long time, such as biological samples, environmental samples, etc., the open top cap ensures the stability and safety of the sample throughout the process.
• Daily Laboratory Use: The easy-to-use design, including pre-slit septa options, allows laboratory personnel to quickly and safely access the contents of the vial, effectively improving laboratory work efficiency and safety.
3)Features
▶ Made from high quality polypropylene material ensuring durability and chemical stability.
▶ Simple unscrewing design makes it easy to use and improves work efficiency.
▶ Smooth surface treatment, easy to clean and leaves no residue.
▶ Lightweight yet sturdy, suitable for long-term repeated use.
▶ Environmentally friendly materials, recyclable and in line with sustainable development requirements.
▶ The production workshop is a 100,000-level purification workshop, which can ensure that the products leaving the factory meet the cleanliness requirements.
▶ With its own testing center, all batches of products undergo strict extreme testing to ensure that the products shipped meet the test requirements.

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