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pH strip pH dry paper double colour test strip We are professional manufacturer of pH strip in China. Please pay close attention to*****-our quality pH dry paper double colour test strip . They are commended mightily for exporting. pH Variations Range: 4.**9.0 0.*5 pH unit increment. 4.5 5.0 5.5 5.*5 6.0 6.*5 6.5 6.*5 7.0 7.*5 7.5 8.0 8.5 9.0. it can test all kind of pH value for all kind colorless liquid. CE & ISO****5 approved. We also manufacture universal pH test strip ***4, use for argricalture, industry and scientific lab. *0 pieces/small box Supply goods in 3 days after received **0% T/T prepayment. urine test strip, reagent strip for urinalysis. *2 test on each strip. China Yercon made, CE ISO****5 approved . Urine strips for Glucose, Bilirubin, Ketone, Specific Gravity, Blood, pH, Protien, Urobilinogen, Leukocytes, MA, Anti-VC & Nitrite in urine. urine analyzer YE***0 CE & ISO****5 approved.