Test: CAMBRIDGE PORTABLE pH METER, 1940
CAMBRIDGE PORTABLE pH METER, 1940
A pH meter is an electronic instrument used to measure the pH (acidity or alkalinity) of a liquid
Donated by Ken Willis
©2007 The Museum of Technology, The Great War and WWII
Company registered in England No. 7452160, Registered Charity No.
1140352, Accredited Museum No. 2221