cap with center hole

Caps for screw thread vials are available with either an open hole for autosampler use and standard addition or with a solid top for sample storage.

Polypropylene Screw Cap with Septa – Polypropylene screw cap with precision-fit septa provide an evaporation-proof seal. Bi-layer include silicone and PTFE. Silicone septa for multiple injections.

One piece polypropylene cap and membrane are also available. These pierceable screw thread caps are designed for one time use and reduce sample preparation time as there is no cap and seal to assemble.

PTFE-lined screw cap for organic samples. Screw caps provide an inert, airtight seal and direct puncture-access to samples with a syringe needle.

Polypropylene screw cap with septum-The polypropylene screw cap with septum provides an anti-evaporation seal. The double layer includes silicone and PTFE. The silicone septum can be injected multiple times. Screw caps lined with PTFE are used for organic samples. The screw cap provides an inert, air-tight seal and can be directly pierced through the sample with a syringe needle.

The threaded vial cap can have an opening for autosampler use and standard addition, or a polypropylene cap and membrane can be provided. These pierceable screw caps are designed for one-time use, and because there are no caps and seals to assemble, the sample preparation time is reduced.

The chemically inert lid used in the Sample storage vial is ideal for most chromatography and storage applications. Use top PTFE or silicone septa to ensure clean production and stable quality of sample bottles.

Polypropylene caps are known for good impact strength, cost effectiveness, and pliability. They can be remelted after they are formed. Aijiren Polypropylene cap is widely used in chromatography analysis.

These caps form an exceptionally tight seal and offer a good chemical barrier. This liner molds itself around the sealing areas of the finish as the cap is screwed on, virtually eliminating leakage, evaporation, contamination, binding and backing off. Great for everything from liquids, to soaps, to macro-invertebrates.

Storage glassware manufactured in Type 1, Class A, 33 expansion borosilicate glass or 51A amber glass
Capacity ranges from 20mL to 60mL
Provide constant pH for duration of sample storage life
Chemically inert caps suitable for most chromatography and storage applications
Top grade PTFE/silicone septa used for cleanliness

Order as individual sample storage vials and closures or as unassembled convenience kits.
Unassembled convenience kits saves time during sample preparation.
Solid-top convenience kits include matched quantities of vials and screw caps with pre-assembled septa.
Open-top convenience kits contain shrink-wrapped vials and separately packaged caps and septa in polybags.

Caps for screw thread vials are available with either an open hole for autosampler use and standard addition or with a solid top for sample storage. One piece polypropylene cap and membrane are also available. These pierceable screw thread caps are designed for one time use and reduce sample preparation time as there is no cap and seal to assemble.

Open top 30ml vial and cap with welded septum ,Pack of 100.
The only low-level certified vials in the market for Total Organic Carbon testing and sampling. Major TOC instrument manufacturers use and recommend these vials.
Vials certified, and ready to use.
Each lot of vials is tested and certified.