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Ferroin indicator solution

for sewage analysis, for COD determination
H412
i harmful to aquatic life with long lasting effects
P273
i avoid release to the environment
Pack Qty.
Pack.
1,10-Phenanthrolin iron(II) salt solution
Density (D) 1,006 g/cm³
Boiling point (bp) 100 °C
Melting point (mp) <0 °C
WGK 2

According to DIN 38409 part H41, H43 and H44.

€33.25 /Pack Qty.

€26.55/Pack Qty.  Campaign price!

excl. VAT. | 100 ml per Pack Qty.

Art. No. T131.1

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Product details



Technical Information
Colour conversion red - blue  
Ox. colour Blue  
Red. colour Red  
Redox potential E0[V] at pH=0 and 20 °C 1,06  
Instructions for use ready-to-use  
Ferroin indicator solution
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T131.1 100 ml glass €26.55
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General information

Determination of chemical oxygen demand (COD)

COD (chemical oxygen demand) is a measure of all the oxidisable components in water under specific conditions. The water sample is mixed with sulphuric acid and heated together with a defined quantity of potassium dichromate, with silver sulphate added as the catalyst. Chloride must be removed beforehand or masked with mercury sulphate. The remaining potassium dichromate is measured by means of titration, using an ammonium iron(II) sulphate solution and ferroin as the indicator. The equivalent amount of oxygen can then be calculated from the amount of potassium dichromate that is used up.

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