2ml hplc and gc vial, cap. 2. 10ml and 20ml headspace vial, cap. 3. 40ml EPA VOA TOC Vial, cap. 4. Nylon and PTFE syringe filter . We are not only lies in our solid technologies, but also our commitment to after-sales service. Once you find aijiren, you've find a better chromatography solution! aijiren Technologies, we’re the difference!