If your sample is sensitive to light, use amber vials. If you need to view a color change then a clear Screw Top HPLC Chromatography Vials are the best choice. The Screw Top Headspace Vials are manufactured from Type I borosilicate glass.
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.