... by emptying a bottle filled with water in the air to be tested and then tightly sealing the bottle. Bulletin - Side 18 1931 Uten tilgangsbegrensning - Om denne boken
...suggestions in this direction. 18. Bottle Method. — The first method tested was that of taking a sample by emptying a bottle filled with water in the air to be sampled, collecting the dust in the bottle by adding a few cubic centimetres of water in the laboratory,...
... by emptying a bottle filled with water in the air to be tested and then tightly sealing the bottle. 