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Title: A perspex box conaining plastic strips with indicator paper [Go to resource]
Description: A perspex box conaining plastic strips with indicator paper at the end . These precision indicators made by Merck & Co., Inc. range pH 2.5 - 4.5. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: pH paper Temporal: c1980 Source: Science Museum Creator: Merck & Co., Inc. Identifier: 2001-516 Go to resource More Like this...
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