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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.
Taste Experiment Lab Test Strips. PTC, sodium benzoate & thiourea supertaster test strips for genetic lab experiments, food testing or party fun, only $5.00. USA made & Q/A tested. See Tabs below for more info. The PTC strip is the most popular but sodium benzoate can offer additional insights.