The Commission amends its requirements under the Poison Prevention Packaging Act of 1970 (``PPPA'') for child-resistant packaging to change the child and adult tests under which child- resistant packaging is evaluated. The revisions to the adult test will substitute 100 older adults, from 50 through 70 years old, for the current panel of 100 18-45 year- olds. The senior adults are tested to see if they can properly use the package in two test periods, 5-minutes and 1-minute. These changes will increase the use of child-resistant packaging by making it easier for adults to use properly. The revisions to the adult test do not apply to products that must be packaged in metal containers or in aerosol form, which will remain subject to the present 18-45 test panel and single 5- minute test period requirements. The revisions to the child test include sequential testing, which can reduce the number of children that have to be tested in order to determine whether a package is child-resistant. For all tests, the number of subjects tested by any one tester and the number of subjects tested at any one site are limited. Also, standardized instructions are required for the child and senior-adult tests.