Takardar PH

1. paperaukar takardar gwajin a cikin giyar da za a iya ganowa na rabin na biyu daga baya, sa'annan a fitar da ita kuma a gwada da madaidaiciyar kintinkiri, wato ƙimar PH ne 2. Wannan takaddar gwajin tana motsawa ne don ruwan giyar assuasive da acid ko giyar alkali cewa ƙaddamarwa yana ƙarƙashin 0.01% 3. Wannan buƙatar gwajin yana buƙatar kiyaye shi a cikin inuwa da wuri mai bushe. Lokacin kiyayewa shine shekaru 3.