Technical Data Sheet
Ferroin indicator solution
Boiling point (bp) 100 °C
Melting point (mp) <0 °C
WGK 2
According to DIN 38409 part H41, H43 and H44.
€36.00/Pack Qty. Campaign price!
excl. VAT. | 100 ml per Pack Qty.
Art. No. T131.1
Product details
Ferroin indicator solution for sewage analysis, for COD determination
| Colour conversion | red - blue |
| Ox. colour | blue |
| Red. colour | red |
| Redox potential E0[V] at pH=0 and 20 °C | 1,06 |
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| Art. No. | Pack Qty. | Pack. | Price | Quantity | |
|---|---|---|---|---|---|
| T131.1 | 100 ml | glass |
€45.05
€36.00 |
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Available
In procurement
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- Subtotal: 0.00
Downloads / MSDS
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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