20 mL Vial, Flat Bottom: cat.# 24685 (100-pk.), 24686 (1,000-pk.) A.I. Headspace: Aijiren: Headspace: Carlo Erba: HS 500, HS 800: CTC: Headspace: Cueni: Headspace: Dani: HSS 39.50, HSS 86.50, SPT 37.50: 20 mL Vial, Rounded Bottom: cat.# 21162 (100-pk.), 21163 (1,000-pk.) A.I. Headspace: Bruker/Varian: Genesis: Cueni: Headspace: Dani: HSS 39.50, HSS 86.50, SPT 37.50: L.E.A.P. Technologies