... for semi-quantitative,visual determination of the pH in gastric tube aspirate of human origin ... made,Glucose, Bilirubin, Ketone, Specific Gravity, Blood, pH, Protein, Urobilinogen, Leukocytes,MA,Anti-VC & Nitrite. ... drug store or B2C) pH color chart pH test soil1.a. special pH,Double color pH strips 4.5, 5 ... test all kind of pH value for all kind colorless liquid.c.gastric pH strips used in clinical ...