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Description
A box containing 5 booklets, each having 20 strips (65 x 10 mm) of test paper for determining the alkanity (Red Litmus) or acidity (Blue Litmus). Each box contains 100 strips (5 booklets x 20 strips).
| Code | Colour |
| 01 | Red Litmus |
| 02 | Blue Litmus |
