Description

Caps

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.

The Screw Caps that are inlcuded with this kit are knurled on the sides for excellent gripping and comfort when applyting to the vial.

Septa

PTFE/Silicone Septa:

High quality, pure silicone is laminated to PTFE to give a pure, highly inert septum with excellent resealing characteristics even after repeated punctures.

PTFE/Silicone septa are the preferred product for use in most HPLC and GC applications where resealability and high purity are critical. Works well for applications where ease of needle penetration is important.

Septa-silica gel has strong repetitive sealability, and it can maintain good close performance after multiple injections; PTFE is a material with better chemical conditions at present, and it can withstand strong acids and alkalis. The two materials After compounding, the bottle can be used for various laboratory purposes such as sealed sampling, chemical storage and so on. 

PTFE/Silicone/PTFE Septa:

A layer of PTFE is laminated to each side of high purity, medium durometer silicone to form a septum that is the most resistant to coring while maintaining good resealing characteristics. The PTFE/Silicone/PTFE septum is recommended for the most critical applications such as ultra trace analysis or where there is a longer time between injections or for internal standard methods. PTFE/Silicone/PTFE septa provide superior performance with any autosampler employing a large diameter, blunt tip needle.

Advantages

The silicone / PTFE septa used were designed to provide the right amount of resistance to autosampler needles during the injection process so that they penetrate the vial properly without damaging the septa or the injection needle. 

Too much or too little resistance to the needles can damage the septa, compromise resealing, cause needle blockage from coring of the septa material and even damage your autosampler. 

These septa perform even when using a wide range of needles: fine, blunt or even dull. 

Low sample or solvent evaporation performance even after multiple injections have been observed when using aijiren caps.

Company Introduction

1. Founded in 2007, Zhejiang Aijiren, Inc. specialized in chromatography consumables, such as autosampler vial for HPLC, headspace vial, GC vials, micro inserts, septa and caps, syringe filter, etc, covers more than 10000 square meters, and has clean workshop more than 2000 square meters. 100, 000 class cleaning room;  

2. 15 years export experience, exprot to more than 70 countries, 2000+ customs around the world; 

3. More than 10 years experience for automatic analytica technique

4. Aijiren has own R&D Center and Quality Controll Center to keep products in high quality.

5. All materials are produced at 100,000 grade clean room.

6. Passed ISO9001:2015  quality management system certification, RoHS compliance can also be provided.