pH test paper Duotest pH 1.0–4.3, 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

90302: Normal pack

Parameter pH
Gradation pH – 1.0 • 1.3 • 1.6 • 1.9 • 2.2 • 2.5 • 2.8 • 3.1 • 3.4 • 3.7 • 4.0 • 4.3
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

90312: Refill pack

Parameter pH
Gradation pH – 1.0 • 1.3 • 1.6 • 1.9 • 2.2 • 2.5 • 2.8 • 3.1 • 3.4 • 3.7 • 4.0 • 4.3
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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