Claims
- 1. In an improved method of testing a particulate filter, the improvement consisting essentially of passing a salt nuclei coated with isopropyl isostearate.
- 2. The method of claim 1 wherein the geometric mean diameter in micrometers of said aerosol lies between about 0.18 and 0.33.
- 3. The method of claim 2 wherein the geometric standard deviation of said mean diameter must be below about 1.30.
- 4. The method of claim 3 wherein the concentration of said aerosol must be 25 mg/m.sup.3 plus or minus 10 mg/m.sup.3.
GOVERNMENTAL INTEREST
The present 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.
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Ortiz et al. |
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|