| catalog # | conc. in solvent and volume | units | |
|---|
34445 | 20-60 ppbC (parts per billion expressed as carbon) in nitrogen, 104 liters @ 1,800 psi | ea. | |
34445-PI | 20-60 ppbC (parts per billion expressed as carbon) in nitrogen, 110 liters @ 1,800 psi (Pi-marked Cylinder) | ea. | |
