pH test paper Duotest pH 1–12, with two indicator zones

Duotest indicator papers combine two different indicator zones on a single strip. The zones are separated by a hydrophobic barrier, which effectively prevents mixing of the reaction colors and increases the mechanical stability.

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Technical Data

90301: Normal pack

Parameter pH
Gradation pH – 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12
Evaluable on reflectometer No
Length 5 m
Width 10 mm
CE certified No
Shelf life (from production) 3 Years
Storage temperature 4−30 °C
Scope of delivery 1 reel of 5 m length and 10 mm width
Hazardous material No

90311: Refill pack

Parameter pH
Gradation pH – 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12
Evaluable on reflectometer No
Length 5 m
Width 10 mm
CE certified No
Shelf life (from production) 3 Years
Storage temperature 4−30 °C
Scope of delivery 3 reels of 5 m length and 10 mm width
Hazardous material No

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Catalog Rapid Tests (EN)
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