pH paper or strip gives discrete values in range of 1 or 2 or 5 or 8 etc. If we need to use pH paper for closely related values segregation can we use pH paper just as pH electrode?
Dear Suray, pH paper shows pH value + - 1 pH, it is useful just for preliminary express-test. If you need strong control of pH please use well-calibrated pH-meter. If you need a cofirmation of meaure you can choose a Ph-meter with results memory or with WiFi printer connection etc.
thank you Mikhail, but the query was actually related to why we can not get thecpH if intermittent range in paper or more accurate position in paper. Although whatever you said is absolutely correct .