Pack of 3 refill rolls of5 m of test paper indicating pH values from 5.5 to 9.0
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Bag of 3 refill rolls, individually wrapped in an aluminium foil for optimised protection to air and light.
Suitable for plastic dispenser sold with rolls per unit.
One colorimetric scale available per pack.
Scale : 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9