Claims
- 1. In an improved process of passing an aerosol mixture through a filter, and thereby measuring the efficiency of the filter, the improvement consisting essentially of said aerosol being solely a poly-alpha olefin having chain lengths in % by volume of about:
- ______________________________________% Carbon atoms, chain length______________________________________0.6 2082.1 3016.0 401.0 502.0 60.______________________________________
- 2. The process of claim 1 wherein the concentration of said aerosol at said filter is 100 mg/m.sup.3 plus or minus 20 mg/m.sup.3.
- 3. The process of claim 1 wherein said measuring is done by light-scattering means.
- 4. The process of claim 1 wherein the aerosol geometric mean diameter is about 0.20 micrometers.
- 5. The process of claim 1 wherein the aerosol geometric standard deviation is about 1.25.
GOVERNMENTAL INTEREST
The invention described herein may be made, used or licensed by or for the Government for governmental purposes without the payment to us of any royalties thereon.
US Referenced Citations (6)
Number |
Name |
Date |
Kind |
H185 |
McMahon |
Jan 1987 |
|
H267 |
Carlton et al. |
May 1987 |
|
3773044 |
Wallace |
Nov 1973 |
|
4914957 |
Dougherty |
Apr 1990 |
|
4917830 |
Ortiz et al. |
Apr 1990 |
|
4963289 |
Ortiz et al. |
Oct 1990 |
|