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These test strips indicate hydrogen peroxide concentrations up to 10% & can be used to assess 35% food grade concentrated peroxide but dilution is required.
Click on the Tabs below for more information.
Peroxide test strip, 1-3-5-10% (100,000ppm), ~50/pack
These test strips are intended for use with concentrated hydrogen peroxide, aka "food grade". Unlike the other 2 strips, these change to only one color, black. The concentration is determined by the speed of the color change. There is an initial "lag time" before any color change is observed and a completion time where the final color change is observed; see the table below. For 2 & 3% contact lens peroxide solutions, add approximately 5 seconds to the lag/completion times for these concentrations.
Is your hydrogen peroxide stock solution 3%, 10%, 30%, 35%? No matter, use our sanitizer dilution calculator to take the quesswork out of making up a batch of 100, 200, 400 (or other) ppm hydrogen peroxide solution.
The 1-10% peroxide test strips use a timed response which differs from the other peroxide strips which refer to a color chart
Note: The bracked numbers in the lag time column for 1, 2, 3% are for contact lens solutions & differ due to additives. The results are based on CIBA Geigy AOSEPT & will vary with other similar products.
Note (1): Suitable for detection of hydroperoxides and ether peroxides. Polymeric peroxides, which can form in diethylether, are not detected. Organic peroxides, such as di-terc-butyl peroxide, di-cumyl peroxide or terc-butyl perbenzoate, either do not react or react with significantly reduced sensitivity.
Note (2): If vial is properly stoppered, strips have a 2 year shelf life
Note (3): The number of strips per pack or vial is approximate.
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