Thousands of tests of the atmospheric dust have been made with this instrument at many places over the world, and in no part of it has dustless air been found; indeed it is very rare to find air with less than 100 particles per c.
When the number in the air tested exceeds that figure, the dusty air must be mixed with such a quantity of dustless air as will reduce the number below 500 per c.
There is absolutely no difference between the air within and that without save that the one is dustless and the other dust-laden.
If man's ceaseless quest of the perfect appeals, you may write with Mr. Sharp "The Dustless Duster.
A dustless path led to the door, through a bordering of shrubs of Persian rose in perfect bloom.
A definite small quantity of common air is diluted with a fixed large quantity of dustless air (i.
One-tenth of a cubic inch of the air to be examined is then introduced into the flask, and mixed with the 30 cubic inches of dustless air.
Old Stocking Tops for Dusters or Dustless Mop--Old stocking tops make good dusters when sewed together.
Several old stocking tops cut into strips and dipped in paraffine oil make a fine dustless mop for hardwood floors.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "dustless" in a variety of sentences. We hope that you will now be able to make sentences using this word.
