| 摘要 |
PCT No. PCT/SE84/00088 Sec. 371 Date Oct. 26, 1984 Sec. 102(e) Date Oct. 26, 1984 PCT Filed Mar. 12, 1984 PCT Pub. No. WO84/03770 PCT Pub. Date Sep. 27, 1984.A method for assaying dry gases comprising sulphur trioxide capable of forming a mist. The gas to be assayed is introduced into a closed space and contacted therein with air comprising normal humidity which reacts with the gas to form a mist, whereafter the light-extinction properties of the mist are measured. |
