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1. To test saliva: deposit a small amount of saliva on a spoon or other suitable surface. Dip tape into saliva for three seconds. Remove. Compare to color chart.
2. To test urine: dip tape in urine flow. Shake excess fluid off tape. Compare to color chart.
Test saliva and/or urine in the morning. Test two hours after eating or drinking to observe impact on pH.
7.0 is neutral. Above 7.0 is alkaline. Below 7.0 is acid.