Peroxide Test Strips 100-1000 ppm EM Quant (100 Pack) 10337-1 EMD

Purchase Peroxide Test Strips 100-1000 ppm EM Quant (100 Pack) 10337-1 EMD

Peroxide Test Strips 100-1000 ppm EM Quant (100 Pack) 10337-1 EMD MSDS (Material Safety Data Sheet)

EM Quant Peroxide Test, General Instructions, Cat No 10337

EM Quant® Peroxide Test, Catalog No. 10337/1

1. Method

In the presence of peroxidase, hydrogen peroxide reacts with an organic redox indicator to form a yellow-brown oxidation product. The concentration of hydrogen peroxide is measured semiquantitatively by visual comparison of the reaction zone of the test strip with the fields of a color scale.

The reaction zone is at the extreme end of the test strip.

In addition, each test strip also possesses a warning zone. If this turns blue in color (+), this means that the hydrogen peroxide concentration is greater than 2,000mg/l, although the reaction zone may indicate a value within the measuring range! (See Note in Section 4.)

2. Measuring Range and Number of Determinations

Measuring Range/Color Scale Graduation1) Number of Determinations
100-200-400-600-800-1000mg/l H2O2 100

1) for measurement of concentrations >1000mg/l H2O2 see section 6

3. Applications

This test is suited for the selective determination of the hydrogen peroxide concentration in aqueous solutions.

4. Influence of Foreign Substances

This was checked - in the case of interfering ions up to concentrations of 1000 mg/l - in solutions containing 400 and 0mg/l H2O2. The concentrations of foreign substances given in the table lie below the limit at which the determination is interfered with:

Concentrations of Foreign Substances in mg/l or °e
Ascorbate 100
Ca2+ 500
Fe2+ 5
Fe3+ 5
NO3- 500
SO32- 100
Free Chlorine (hypochlorite) 100
Bound Chlorine (chloramine T) 100
Formaldehyde 1000
Total Hardness 88 °e

NOTE:
The warning zone also turns blue in color in chlorine-containing solutions in which the chlorine content is 10mg/l or greater!

5. Reagents and Auxiliaries

The analytical test strips are stable at least up to the date stated on the pack when stored in the closed tube at +2 to +8°C.
Package Contents:

Tube containing 100 analytical test strips

Other reagents:
colorpHast® pH Test Strips (non-bleeding), 0-14, Cat. No. 9590
Sodium hydroxide solution, 1mol/l, Cat. No. SX0706H
Sulfuric acid 0.5mol/l, Cat. No. SX1243H

6. Preparation

  • Samples containing more than 1000mg/l H2O2 must be diluted with distilled water.
  • The pH must be within the range 2-7.
    Check with colorpHast® strips.
    If pH is lower than 2, add dilute sodium hydroxide solution dropwise; if greater than 7, add dilute sulfuric acid dropwise.

7. Procedure

  • Remove 1 analytical test strip and immediately reclose the tube.
  • Immerse both zones of the test strip in the measurement solution for 1 second.
  • Shake off excess liquid from the test strip.
  • Wait 30 seconds, then compare the color of the reaction zone with the color fields on the label. Determine with which field the color of the reaction zone coincides most exactly and read off the corresponding concentration value. If an exact color match cannot be achieved, estimate an intermediate value. The warning zone may not turn blue in color during this time!

Notes: