CORRELATION OF ARAPAHOE SMOKE PARTICULATE DATA.

Smoke-particulate test data obtained at the University of San Francisco and at Arapahoe Chemicals Inc. using the Arapahoe smoke chamber are compared. The data based on weight loss did not exhibit any consistent differences, and the data based on initial weight did not exhibit any consistent differences below 3 weight percent. Any possible differences due to elevation may be limited to specific materials.