CRAFTWAFT Blue and Red litmus Paper Set 120 Strips for Testing Acid and Base Solutions, Activity Laboratory Industrial Scientific Experiment pH Blue, Red Litmus Papers (Pack of 120)

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litmus paper strips blue red 120 acid base indicator strips for testing acid and base solutions,fun and learn activity for school,home and education institute experiment
Pack of 6 Booklets
Each Booklet of 20 Strips

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