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Supelco

Oxygen Test Kit, titrimetric

titrimetric, for use with MQUANT® titration pipette

Synonym(s):

Oxygen Visual Test Kit

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About This Item

UNSPSC Code:
41116116
NACRES:
NA.24

product name

Oxygen Test, titrimetric, for use with MQUANT® titration pipette

analyte chemical class(es)

oxygenates

Quality Level

100

compatibility

for use with MQUANT® titration pipette

detection method

titrimetric

storage temp.

15-25°C

Related Categories

General description

Method: titrimetric, acc. to Winkler, with titration pipette MQuant®
The sustainability of biological processes in natural waters is essentially depended on a sufficient oxygen content. The oxygen present in water is also consumed by chemical processes and by microorganisms. This MQuant® Oxygen test (formally MColortest®) is suitable for the titrimetric determination using a graduated syringe.
It can be used in:
  • Groundwater, drinking water, and surface water, seawater
  • Aquarium water, waters from aquaculture
  • Industrial water and wastewater
  • Boiler water and boiler feed water
  • Beverages


Method
In alkaline solution, dissolved oxygen oxidizes manganese(II) ions to form manganese(IV) hydroxides (“oxygen fixation”). In strongly acidic solution these yield manganese(III) ions, which in turn oxidize iodide ions to form iodine. This is then titrated with sodium thiosulfate solution against starch as the indicator until the solution becomes entirely colorless. The oxygen concentration is determined from the consumption of titration solution (iodometric determination acc. to Winkler). The oxygen consumption is calculated as the difference between the oxygen content measured immediately after sampling and that measured after n days (n = 2 to 5).

Legal Information

MCOLORTEST is a registered trademark of Merck KGaA, Darmstadt, Germany
MQUANT is a registered trademark of Merck KGaA, Darmstadt, Germany

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Danger

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 3 - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A - STOT RE 2 - STOT RE 2 Oral

target_organs

Brain, Thyroid

Storage Class

8B - Non-combustible, corrosive hazardous materials

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

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