High Quality 8-425 HPLC Vial for SHIMADZU. Let me introduce the material of 8-425 2ml autosampler vials, 33 Expansion borosilicate glass USP Type I Class A made of clear vial, or 51 Expansion borosilicate glass USP Type I, Class B made of Amber vial.Our glass uses neutral borosilicate and low borosilicate, but our neutral borosilicate can reach the