... for semi-quantitative,visual determination of the pH in gastric tube aspirate of human origin ... In triplicate color paper pad.Place 2-3 drops of aspirate onto the test zones,within ... 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 ...