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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.
Many proponents of this diet suggest that people monitor the pH value of their urine using test strips, making sure that it is alkaline (pH over 7) and not acidic (below 7). Howeverâ¦ itâs important to note that the pH value varies greatly within the body. Some parts are acidic, others are alkaline.