Headspace vial size 20 mL Liquid volume in vial 6 mL Vial pressurized to 15 psi for Class 1 and Class 2B, 20 psi for Class 2A Final vial pressures for 0 (ambient), 2 psi, 5 psi, 8 psi, 10 psi, Class 2A 12 psi, and 15 psi. Final vial pressures for 0 (ambient), 2 psi, 5 psi, 10 psi Class 1 and Class 2B Headspace software B.01.02 or greater