pH water test strip.80,100pieces/pack, real professional manufacturer,2colors in one strip,pH 3colors gastric juice test strip ... 1 or 2 color saliva,urine,water,soil,rain,acidic and alkaline pH test strip.squre pack size: 5. ... are plastic strips to which several separate absorbent reagent test areas are affixed, the reagent strips are packaged ... health,wealth,credit and culture! pH swim water test strip