Nov 19, 2021 · Insert for Shell Vial - Vials, Autosampler Vials, Inserts When used in conjunction with autosampler vials, these allow for maximum sample recovery and easier sample removal. Vial inserts (0.1 mL, clear glass conical (with bottom spring), 5 x 36 mm) allow the use of smaller sample volumes with standard autosampler vials.