Tag: ph

Determination of ph in a laboratory glass tube

Determination of ph in a laboratory glass tube 57 19 0

Ph scale for comparing the result hydrogen index

Ph scale for comparing the result hydrogen index 102 17 0

Close-up of a solution in a dropper

Close-up of a solution in a dropper 49 15 0

Close-up of a indicator paper with sour testing

Close-up of a indicator paper with sour testing 83 11 0

Indicator paper with alkaline testing

Indicator paper with alkaline testing 59 10 0

Chemical solutions and indicator paper. Analysis concept

Chemical solutions and indicator paper. Analysis concept 39 7 0