Aijiren 2ml amber HPLC vials with blue caps are constructed from Type 1 borosilicate glass, with low metal content, to protect your sample from destabilizing or leaching. Product Name: 2ml Amber HPLC Vials with Blue Caps Place of Origin: Zhejiang, China Packing: 100pcs/pack Color: Amber or Clear Size: 12*32mm