Aijiren as a leading manufacturer in China, supply high quality Screw Top Headspace Vials, caps, septa and syringe filters. The consistancy of our products between each batch is very good, you can be assure with our quality. Rated 4.7 /5 based on 414 customer reviews. Clearance sales_LABWARE GROUP 20ml Headspace-Vial, 75.5 x 22.5mm, a