Technical Data Sheet
Ferroin indicator solution
Ready-to-use products and reagents
Boiling point (bp) 100 °C
Melting point (mp) <0 °C
WGK 2
€48.95/Pack Qty.
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 |
- Subtotal: 0.00
| Art. No. | Pack Qty. | Pack. | Price | Quantity | |
|---|---|---|---|---|---|
| T131.1 | 100 ml | glass |
€48.95 |
|
|
|
In stock
Available (note delivery time)
In procurement
No longer available
Delivery date currently unknown
|
|||||
- 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.