EM Quant® Peroxide Test, Catalog No. 10081
Analytical test strips for the detection and
semiquantitative determination of peroxides
The Peroxide Test detects inorganic and organic
compounds which contain a peroxide or a hydroperoxide group. The test
is therefore well suited for the routine control of simple ethers such
as diethyl ether, tetrahydrofuran and dioxane. Polymeric peroxides
which can under some circumstances form in simple ethers are not
detected or only detected with reduced sensitivity. In such cases, a
trial determination should be carried out in the laboratory to check
the suitability of the peroxide test strip.
Apart from checking ethers, the test can also be
used for checking UHT milk for residual peroxides, for determining
perborates in washing powders, for checking electrolytic etching and
copper stripping baths containing peroxides, for checking the
concentrations of peroxides added as bleaches or oxidants in paper and
textile manufacture and for the determination of peroxides in swimming
Peroxide on its own and combined with peracetic
acid is a versatile disinfectant which, because of its biocidal,
fungicidal and virucidal properties, and because it does not form
harmful decomposition products, can even be used in the food industry.
Here, the test is suitable for checking the prescribed concentration
of disinfectant and residual concentration after disinfection, when
equipment or the product must be washed free of disinfectant.
Method of Determination
Peroxidase (POD) transfers oxygen from peroxide
to an organic redox indicator, which is converted to a blue oxidation
In the case of organic solvents, the moisture
required for the reaction is obtained by briefly dipping in distilled
water or by repeatedly breathing on the reaction zone after dipping
into the solvent.
1 - 3 - 10 - 30 - 100mg/l (ppm) H2O2
Directions for Use
- Remove a test strip and close the container
- Immerse the test strip in the sample
solution for 1 second, so that the reaction zone is thoroughly
- Remove the test strip, gently shake off
excess liquid, wait 5 seconds and compare the reaction zone with the
Organic Solvents (volatile ethers)
- Remove a test strip and immediately reclose
- Dip the test strip into the solvent to be
tested for 1 second such that the reaction zone is completely
- Move the test strip slightly to and fro for
3-30 seconds until the solvent has evaporated from the reaction;
- dip into distilled water for 1 second and
shake off excess water OR
- breathe on it 4 times each for 3-5
- After 5 seconds, compare the reaction zone
with the color scale.
The appearance of any blue coloration within 3
minutes can be interpreted as a positive reaction.
Inorganic peroxides are determined in aqueous
solution at pH 2-12. (Measure the pH with non-bleeding Universal
Indicator Strips pH 0-14, Catalog number 9590-3). If necessary, adjust
the pH of the solution with citric acid or hydrochloric acid 1 mol/l
or with sodium citrate or sodium acetate.
Unopened packages of the Peroxide Test should be
stored in a refrigerator. Opened packages on the other hand must be
stored as dry and as cool as possible, but outside of the
refrigerator, since on repeated opening of the cooled package, so much
moisture condenses in the container that the capacity of the drying
agent in the stopper is exceeded.
10081 EM Quant® Pack of Peroxide
Test 100 test strips