1. 9mm screw vials can be used for all common autosampler 2. Standard wide open neck design for GC and HPLC 3. 9mm wider opening for easy punture 4. Amber, type 1class A borosilicate glass 5. 9mm PTFE/silicone septa, has excellent chemical interness, acid and alkali resistance 6. 9mm screw black open top pp caps Shipping Information