Home » News » 9-425 » Wide Opening 5.0 Borosilicate Glass 2ml hplc sample vials with pp cap for wholesales Wide Opening 5.0 Borosilicate Glass 2ml hplc sample vials with pp cap for wholesales 1.5ml 9mm Short Thread Autosampler Vials ND9 are made of clear Type 1, Class A Borosilicate Glass with a writable label for sample identification.