1.11107
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
compatibility
for use with MQUANT® titration pipette
detection method
titrimetric
storage temp.
15-25°C
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:
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).
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
signalword
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
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
Regulatory Information
监管及禁止进口产品
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Global Trade Item Number
| SKU | GTIN |
|---|---|
| 1111070001 | 04022536130309 |