... .0)In triplicate color paper pad.Place 2-3 drops of aspirate onto the test zones,within 10 to ... read the corresponding pH.3 colors gastric aspirate pH indicator strips. 1 or 2 color saliva,urine,water,soil,rain,acidic ... and alkaline pH test strip.squre pack size: 5. ... Catching Yercon mean catching health,wealth,credit and culture! pH water test paper