Description
pH indicator papers where the indicator and color scale are combined on a single strip. Gradation of scale: 3.8 -4.0 - 4.2 - 4.4 - 4.6 - 4.9 - 5.2 - 5.5
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Description
pH indicator papers where the indicator and color scale are combined on a single strip. Gradation of scale: 3.8 -4.0 - 4.2 - 4.4 - 4.6 - 4.9 - 5.2 - 5.5