Open University pH meter and probe, 1990-1996.
3 4 c m
40cm
actual image size: 32cm x 26cm

Open University pH meter and probe, 1990-1996.

© Science Museum / Science & Society Picture Library

Description

Open University pH meter and probe, type 3051, made by jenway for use on the Open University's Environmental Science Course T237. In chemistry the pH value of something (for example rainfall) refers to its acidity or alkalinity, whereby a pH value of 7 is neutral, values lower than 7 are more acid and higher than 7 more alkaline.
 

Image Ref.

10439360
 

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