Customized clear HPLC sample vials Aijiren. HPLC Vials,Autosampler Vials, 2ml Vials Aijiren Vial, screw top, headspace, clear, 20 mL, 23 x 75 mm, 100 100pcs 20mm Crimp-top Aluminium Caps PTFE/Silicon for 10ml/20ml Headspace Vial · 500pcs Lab 10mL Sample Vials 20mm Crimp Top HPLC Headspace Bottle Round Bottom.