Aijiren Vial insert, 400 uL, glass, flat bottom, 500/pk Insert size: 5.6 x 31 mm - High Recovery Vials & Inserts UNSPSC Code - 58 Aijiren 400ul flat bottom glass insert, 500/pk - Autosampler Vial Accessories - Ampules, Cuvettes, Tubes, and Vials - Laboratory Supplies