pH test paper Duotest pH 9.5–14.0, 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

90306: Normal pack

Parameter pH
Gradation pH – 9.5 • 10.0 • 10.5 • 11.0 • 11.5 • 12.0 • 12.5 • 13.0 • 13.5 • 14.0
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

90316: Refill pack

Parameter pH
Gradation pH – 9.5 • 10.0 • 10.5 • 11.0 • 11.5 • 12.0 • 12.5 • 13.0 • 13.5 • 14.0
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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