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The pH strip is used for the determination of pH. The four colors on each strip correlate to. a pH range of 0 to 14. In the presence of fluid with normal pH (7.0), the strip willshow. the four colors of yellow-orange, orange, olive green, and yellow. In the presence of acidic. fluids (pH 5), the strip will display the four colors of yellow-orange, orange, tan and. yellow. The pH of gastric fluid is normally acidic.
Similarly, you can test the pH of your saliva and/or your urine with simple litmus strips, which are available in most pharmacies. Keep in mind that in order to get the full picture of your bodyâs pH, youâll need to carry out the test not just on one day, but daily for a period of time.