Vinoferm pH strips 2.8 - 4.6 pH (20s)

Vinoferm pH strips 2.8 - 4.6 pH (20s)
Vinoferm
pH strips 2.8 - 4.6 pH (20s) (5194)
Immerse the strip completely in solution for about 3 seconds, remove and compare the middle with the coloured sacle.
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