The Insert Vials are 12 x 32 mm vials with a sealed-in, 300ul volume insert. The producing process controls the depth and place of the insert relative to the bottom of the vial. This allows more consistent sample recovery from vial to vial and prevents the autosampler needle damage. This Insert Vials have a 300 µL capacity with a residual volume of only 4 µL, depending on the solvent, needle style and depth adjustment of the autosampler. The Inserts and clear vials are manufactured from ASTM Type I, Class A borosilicate glass. Amber vials are manufactured from borosilicate glass. The Insert Vials are available for screw top, crimp top ,snap top.