[en] A vacuum post for pumping-out of devices, used for adsorbents investigation, is described. Such vacuum post, generating pure oilless vacuum, is necessary to regenerate adsorbents under investigation. Pure oilless vacuum is produced with the help of two forevacuum pumps with the following pumping-out with highvacuum adsorption and titanium pumps. Adsorption pumps are cooled by liquid nitrogen. It is established in the result of the test of vacuum post with four devices with adsorbents connected with it, that using only adsorbtion pumps for pumping-out the pressure of P = 10^-1 Pa is achieved in devices; after preliminary blowing of all system with dry nitrogen P=10^-2 Pa; during the simultaneous operation of adsorption and titanium pumps at two-hour heating of devices with adsorbents P=6x10^-3 Pa, and at 6-hour heating P=3.2x10^-4 Pa. The limit vacuum, achieved by vacuum post, is equal to 5x10^-5 Pa with devices P=1.2x10^-4 Pa. The devices heating has been carried out at 200 deg C. All post sealings are resin. Described vacuum post permits to accelerate adsorbent regeneration in devices without pollution of studied adsorbent with working substance of pumps